https://www.yeh-eng.com/expertise daily 0.75 2019-08-12 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1554747533333-2CDHLELQVYP252I41DTX/NMRL+Banner+Edited.jpg Expertise https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646903316-I5TUP8NVY6KOK3JKHRQG/image-asset.jpeg Expertise - Construction Management Photo by MiguelMalo/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646942956-FANEU7QPSY76Z8PO7OZQ/image-asset.jpeg Expertise - Construction Inspection Photo by microgen/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558385676201-T4I8PVAX5S1EQ4AEARLN/Prussian+Blue.png Expertise - Quality Control https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558385623957-C9QCPKEYZ0Q2L3MVF7VZ/Prussian+Blue.png Expertise - Quality Assurance https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353222525-O3DLH0L6N6J844SK8KLZ/Prussian+Blue.png Expertise - Earth Retaining Systems https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353206713-TY1CEZYIDAFXMB529ZGK/Prussian+Blue.png Expertise - Rock Slope Stability https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646922663-AARWJWG8RMA7Y1FC008J/image-asset.jpeg Expertise - Materials Testing Photo by Sasiistock/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558043241178-6H5WBZBS55TL1EI7JY7G/GIS_Cross_Section_View.jpg Expertise - Instrumentation and GIS https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646542763-FZ4D546JZA0BMOHH37OB/image-asset.jpeg Expertise - Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353192994-183RBPNNCTY88HGKCPAE/Prussian+Blue.png Expertise - Pavement Design https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558386640948-QI7IBXC6ZO16BMAPOE37/Prussian+Blue.png Expertise - Tunnel Design https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1565640497137-VAYHA4YBKG6XH6R2DQOM/Better%2Bpoint-bonita-lighthouse-bridge.jpg Expertise - Foundation Design https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565589208-XFZTXDHEDJNRBB3NFFJ7/Prussian+Blue.png Expertise - Geologic Hazards https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565443195-79ZX5X2LBXVGFFAKVZDY/Prussian+Blue.png Expertise - Site Investigation https://www.yeh-eng.com/geotechnical-services daily 0.75 2019-06-20 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558394672100-WC6D0PJPRKSERFPVPU65/Contour%2B3.jpg Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558387952254-KWTEDBY9BFSX5052IC3T/Pavement%2Bdesign.jpg Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1562102153571-FNHNOBH5G50AVE8CLEX1/Confluence%252BPark%252Bnear%252BREI%252B.jpg Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558462713179-R6FK29NO1I2QNHELPNAN/Geologic+Hazards.jpg Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558459384042-K1HZXBZ43YTXESOAZJ31/Landslide_View_BackgroundColor4REV.jpg Geotechnical Services - Geographic Information System (GIS) Capability Yeh brings an efficient team of GIS professionals with complementary strengths to assist with its GIS needs. We use the full ArcGIS suite at the Arc/Info license level, including the Network Analyst, Spatial Analyst, 3D Analyst, and GPS Analyst software extensions. In addition to Yeh’s GIS staff, we have an internal team of skilled field personnel utilizing Trimble GeoXH sub-meter accuracy GPS units with external antennae for reliable capture of field assets. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1559235325054-BLMX165Z4Z3AOIBIO1CO/Foundation+Design.jpg Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558390954370-0KY0R32I8LUATRE2Z27L/Engineering%252BServices%252B-%252BSite%252BInvestigation.jpg Geotechnical Services https://www.yeh-eng.com/geotech-gallery daily 0.75 2019-08-12 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557937937671-UC8T26P33IYE3TG9N2WH/Geotech+Bear+Creek+Bridge+DSCN3213.JPG Geotechnical Engineering Gallery - Bear Creek Bridge https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557937937671-UC8T26P33IYE3TG9N2WH/Geotech+Bear+Creek+Bridge+DSCN3213.JPG Geotechnical Engineering Gallery - Bear Creek Bridge https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557958019451-Q6OALV1ZSWX5J1M0Z92L/RMNP+Crater+Trail.jpg Geotechnical Engineering Gallery - Rocky Mountain National Park, Crater Trail Yeh provided geotechnical and geologic information regarding site conditions of the Crater Trail, damage due to severe erosion in areas, for repairs and reroute. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1553547504987-OLSK5UHO97BHZZOZO112/image-asset.jpeg Geotechnical Engineering Gallery - Point Bonita https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557957512294-GLNFWI78EX127BPPSNVP/SperryChaletGlacierNP.JPG Geotechnical Engineering Gallery - Sperry Chalet, Glacier National Park The Sperry Chalet was built by the Great Northern Railroad in 1913 and severely damaged in a fire in 2017. The reconstruction and restoration retained as much of the historic structure as possible. Yeh staff accessed the site on horseback, evaluated site conditions, and developed recommendations for allowable bearing capacity for new foundations. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557937955764-PLC6CRZI80S0H72EF1FZ/Flood+Repair+Big+Thompson+Flood+Repair+Wall+1+%283%29.JPG Geotechnical Engineering Gallery - Big Thompson Flood Repair Yeh performed geotechnical engineering work including field reconnaissance, wall assessments, wall evaluation, construction observation, and documentation of tieback repairs. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557957600562-77HNKLH7NXWJ7ON3N89Q/Peak+to+Plains+trail.jpg Geotechnical Engineering Gallery - Peak to Plains Yeh provided geotechnical design, construction inspection, soil and concrete testing services for MSE retaining structures, drilled shaft bridge foundations for 3 bridges, trail subbase soils, trail concrete, temporary shoring soil nails, rockfall mitigation, and a unique underpass structure which carries the trail under US Highway 6. https://static1.squarespace.com/static/5c83e306809d8e6cbb8a6296/5c93fc9ae5e5f0c49ba807aa/5c9940f09627503fbd2df37e/1553547479734/ Geotechnical Engineering Gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557957858258-YB04JO9DD62BYL3FFLD8/tunnels1.JPG Geotechnical Engineering Gallery - Veterans Memorial Tunnels Yeh provided geotechnical services including complete tunnel geotechnical investigation and generation of the Geotechnical Data Report (GDR) supporting underground design for expansion of both the East- and Westbound tunnels. Yeh performed portal rockslope design and rockfall protection design for the east- and westbound tunnels. Additionally, Yeh performed deformation monitoring of both I-70 tunnels during widening construction. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558031368541-MLIJD7F9R4MIDR15L8TX/EPS+Fill+211-111+Colorado+SH+14+Cameron+Pass.jpg Geotechnical Engineering Gallery - Cameron Pass Landslide Yeh staff provided landslide remediation including expanded polystyrene (EPS) and tiebacks. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557957781357-SXXJXVJ8ES8PFHB033O9/BlueTrail.jpg Geotechnical Engineering Gallery - Blue Trail Slide Design and remediate a landslide and incorporate the repair reconstruction of a modular block retaining wall. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557957423272-QP54KP1GKOTMUYBBPUW9/Daniels_Park.jpg Geotechnical Engineering Gallery - Daniels Park Yeh geotechnical engineering staff characterized subsurface sandstone, evaluated rock rippability, and designed rock cuts, rockeries, and pavements. Yeh then provided inspection and materials testing during construction. https://www.yeh-eng.com/featured-projects daily 0.75 2020-12-09 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1592430893238-OX53PEYZQ7IIUY6E1HQB/image-asset.jpeg Featured Projects - Canyonlands Field Airport Yeh is teamed with Armstrong Consultants, Inc. on this project at Canyonlands Field Airport in Moab, Utah. Yeh is providing geotechnical engineering recommendations and subsequent quality assurance / acceptance testing for the Taxiway A and Terminal Apron Reconstruction Project. In addition to Canyonlands, Yeh has 2020 contracts for engineering and construction services at San Luis (Alamosa), Cortez, Garfield County (Rifle), Rangely, and Grand Junction Regional Airports. We are looking forward to a busy year on the aviation front! https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1592430893238-OX53PEYZQ7IIUY6E1HQB/image-asset.jpeg Featured Projects - Canyonlands Field Airport Yeh is teamed with Armstrong Consultants, Inc. on this project at Canyonlands Field Airport in Moab, Utah. Yeh is providing geotechnical engineering recommendations and subsequent quality assurance / acceptance testing for the Taxiway A and Terminal Apron Reconstruction Project. In addition to Canyonlands, Yeh has 2020 contracts for engineering and construction services at San Luis (Alamosa), Cortez, Garfield County (Rifle), Rangely, and Grand Junction Regional Airports. We are looking forward to a busy year on the aviation front! https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1556645010276-91IGS33G4J125JLCJOJ8/Red+Rocks.jpg Featured Projects - Red Rocks Amphitheatre Over the last 18 years, Yeh has provided on-call geotechnical engineering, pavement design, materials testing and construction inspection services for several projects at Red Rocks: · Visitor Center and restroom facilities · Renovation of the amphitheater seating area · Condition review of the rock features and the installation of mitigation elements · Pavement Design for several parking areas · Utility building · Loading docks · Soil nail retaining walls https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1556645202097-11Y4K4GQ6WK6G1P7M5WN/Twin+Tunnels+completed+edited.jpg Featured Projects - Veterans Memorial Tunnels Yeh provided geotechnical engineering services for the east and westbound tunnels. Our services include a complete tunnel geotechnical investigation, portal rockslope design, rockfall protection, and deformation monitoring during widening. Additional services for this complex project included: · Tunnel geotechnical data report · Portal barrel design and portal rockfall protection design · Portal rock cut design and support · Tunnel Instrumentation · I-70 retaining walls and foundations Yeh also assisted in the roadway construction inspection, tunnel construction inspection and materials testing. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1554408978173-0CLEMWK0NVJ4SG7PPGSE/Walls+-+Berthoud+Pass+wall.jpg Featured Projects - Retaining Walls in Berthoud Pass This is a test of the description box https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557346394886-XWS4IGJ9ZSSGGMZZ2FOS/IMG_5611.JPG Featured Projects - RTD South East Rail Extension The Southeast Rail Line Extension added 2.3 miles of light rail along I-25 from Lincoln Station, through the new Lone Tree City Center, to RidgeGate Parkway. The project included an end-of-line station, a five story parking structure with 1,300 parking spaces, bus transfer, and Kiss-N-Ride facilities. Yeh provided geotechnical engineering for design, along with construction quality inspections and materials testing for every aspect of construction including the retaining walls, three bridges, stations, parking structure, at-grade crossing, roads, and parking facilities. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1554408958753-ZEK50F4M42TKM9MSMGVC/CFL+Road+Closed+Ahead+LAssen+Park+Rd+DSC03383.JPG Featured Projects https://www.yeh-eng.com/cm-gallery daily 0.75 2019-07-09 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557960212425-SD2XH2L4S48OWKNQ3LJU/US+6+Bridges.jpg Construction Management Gallery - US 6 Bridges Yeh performed construction QA, inspection, and materials testing for a rebuild of US 6 from Knox Court Bridge to the I-25 interchange. Project included building or replacement of 12 bridges, 26 retaining walls, construction of 5 miles of storm drains, and 15 lane miles of pavement. In addition, the project included improvements to four parks, a half mile bike path, new baseball and multi-use turf field, a new pedestrian bridge, sidewalks, and drainage/ irrigation. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557960212425-SD2XH2L4S48OWKNQ3LJU/US+6+Bridges.jpg Construction Management Gallery - US 6 Bridges Yeh performed construction QA, inspection, and materials testing for a rebuild of US 6 from Knox Court Bridge to the I-25 interchange. Project included building or replacement of 12 bridges, 26 retaining walls, construction of 5 miles of storm drains, and 15 lane miles of pavement. In addition, the project included improvements to four parks, a half mile bike path, new baseball and multi-use turf field, a new pedestrian bridge, sidewalks, and drainage/ irrigation. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557958778335-OCJOTG940VMJ4IQW0OPX/RTD+North+Metro.JPG Construction Management Gallery - RTD North Metro Rail Line The North Metro Rail Line (N Line) runs from Denver Union Station to 124th Avenue in Thornton. Yeh is providing geotechnical engineering services for all aspects of the retaining walls, bridges, and stations, and assisting at grade crossing and parking facilities. We also providing construction inspection and materials testing for all civil related work for all construction work. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557960054470-LZY74K70UVDYEDZYAQTF/Golden+drone+photo+10-6-17+DJI_0101.JPG Construction Management Gallery - Golden Linking Lookout Also known as US 6 and 19th Street Intersection, Yeh provided the construction management and inspection staff to the City of Golden to complete the local agency ‘Linking Lookout’ interchange project. This 4-phase project included a signature structure, deep foundations, park and pedestrian access, bicycle access and new pedestrian trails, numerous retaining walls of various types, and deep utility relocations. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557958828602-B9UPJ4CI8PKWZ1CSMUX1/IMG_5518.JPG Construction Management Gallery - RTD Southeast Rail Extension (SERE) The Southeast Rail Line Extension added 2.3 miles of light rail along I-25 from Lincoln Station, through the new Lone Tree City Center, to RidgeGate Parkway. The project included an end-of-line station, a five story parking structure with 1,300 parking spaces, bus transfer, and Kiss-N-Ride facilities. Yeh provided geotechnical engineering for design, along with construction quality inspections and materials testing for every aspect of construction including the retaining walls, three bridges, stations, parking structure, at-grade crossing, roads, and parking facilities. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1560788061346-X4LEH0EQYLUVSDPVJDMX/Cimarron.jpg Construction Management Gallery - I-25 Cimarron Interchange Yeh provided materials testing and documentation as the Owners Verification Testing Service for the US 24 corridor improvements. https://www.yeh-eng.com/construction-services daily 0.75 2024-02-07 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558037372934-5LK9WCTC28BNYIWH8GBZ/RTD%252BNorth%252BMetro.jpg Construction Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558033907196-2Y9ZBK09EB65MT8P4CG2/Veterans%2BMemorial%2BTunnels.jpg Construction Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1565214890350-V6JRSWTDVNRIOTX2GYFX/Good+constru+mgmt+photo+Concrete+Paving.JPG Construction Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558038575285-CWXBB2LV5EIK9WIKAEAE/Materials+Testing+-+Inspection+-+Colorado+Ped+Center+Bridges.JPG Construction Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558046044763-3ZL0LBHPW02K19I5BV39/art+sample+collection.jpg Construction Services - Materials Testing Our technicians are trained and certified to provide a full range of field material testing services including nuclear testing for soil density/moisture, pavement density control, asphalt content, and concrete design compliance. Yeh operates certified material testing labs in five of our six offices. All are extensively equipped and staffed with trained, qualified personnel and overseen by a registered engineer. Our laboratory services are certified by AASHTO, AMRL, CCRL, and CDOT. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558039488843-88582IR7IVSPZJPH6FJP/I-25%2Band%2BUS%2B6%2Bbridges.jpg Construction Services https://www.yeh-eng.com/home-stacked daily 1.0 2021-02-23 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558380679428-52484NNSSN8GUCB001IT/Tunnels.jpg Home https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1554406477728-74J0MI7FP5KBE3YCO1GY/transparent+block.png Home - Successful Projects Start with a Solid Foundation For 20 years, Yeh and Associates, Inc. has invested the resources in building a highly-skilled and trained team of Geotechnical Engineers and Construction Management professionals from the ground up. From design to construction, we are confident our personnel will go above and beyond our client’s expectations to ensure the project’s requirements are achieved under budget and on schedule. We have set a high standard within our field throughout the U.S. for innovative design solutions, and our experienced engineers and technicians are ready to show you how we endeavor to transform our world for the better. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1559840564902-XRKTFFLTW8Y4NN5CSSUG/image-asset.jpeg Home - Geotechnical Services Photo by patriziomartorana/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1553121676713-UCBJ1XYYFWP9EE7KXKQZ/Twin+Tunnels+.JPG Home - Construction Services https://www.yeh-eng.com/home2 daily 0.75 2021-03-03 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558380679428-52484NNSSN8GUCB001IT/Tunnels.jpg Homepage overhaul https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1554406477728-74J0MI7FP5KBE3YCO1GY/transparent+block.png Homepage overhaul - Successful Projects Start with a Solid Foundation For 20 years, Yeh and Associates, Inc. has invested the resources in building a highly-skilled and trained team of Geotechnical Engineers and Construction Management professionals from the ground up. From design to construction, we are confident our personnel will go above and beyond our client’s expectations to ensure the project’s requirements are achieved under budget and on schedule. We have set a high standard within our field throughout the U.S. for innovative design solutions, and our experienced engineers and technicians are ready to show you how we endeavor to transform our world for the better. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646903316-I5TUP8NVY6KOK3JKHRQG/image-asset.jpeg Homepage overhaul - Construction Management Photo by MiguelMalo/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558385676201-T4I8PVAX5S1EQ4AEARLN/Prussian+Blue.png Homepage overhaul - Quality Control https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565443195-79ZX5X2LBXVGFFAKVZDY/Prussian+Blue.png Homepage overhaul - Site Investigation https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565589208-XFZTXDHEDJNRBB3NFFJ7/Prussian+Blue.png Homepage overhaul - Engineering Geology / Geologic Hazards https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558385623957-C9QCPKEYZ0Q2L3MVF7VZ/Prussian+Blue.png Homepage overhaul - Quality Assurance https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646942956-FANEU7QPSY76Z8PO7OZQ/image-asset.jpeg Homepage overhaul - Construction Inspection Photo by microgen/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353222525-O3DLH0L6N6J844SK8KLZ/Prussian+Blue.png Homepage overhaul - Earth Retaining Systems https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353206713-TY1CEZYIDAFXMB529ZGK/Prussian+Blue.png Homepage overhaul - Rock Slope Stability https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646922663-AARWJWG8RMA7Y1FC008J/image-asset.jpeg Homepage overhaul - Materials Testing Photo by Sasiistock/iStock / Getty Images https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558043241178-6H5WBZBS55TL1EI7JY7G/GIS_Cross_Section_View.jpg Homepage overhaul - Instrumentation and GIS https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565443195-79ZX5X2LBXVGFFAKVZDY/Prussian+Blue.png Homepage overhaul - Water / Wastewater https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558565443195-79ZX5X2LBXVGFFAKVZDY/Prussian+Blue.png Homepage overhaul - Field & Lab Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558646542763-FZ4D546JZA0BMOHH37OB/image-asset.jpeg Homepage overhaul - Geotechnical Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557353192994-183RBPNNCTY88HGKCPAE/Prussian+Blue.png Homepage overhaul - Pavement Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558386640948-QI7IBXC6ZO16BMAPOE37/Prussian+Blue.png Homepage overhaul - Tunnel Design https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1565640497137-VAYHA4YBKG6XH6R2DQOM/Better%2Bpoint-bonita-lighthouse-bridge.jpg Homepage overhaul - Foundation Design https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614718294692-7I1EPMPF1L4HSRG6J1E3/Front%2BPage%2B3%2BGlenwood%2BCanyon%2BPhase%2B4.jpg Homepage overhaul https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614717281405-0A6TJZZIKMMUGY5RTMRO/Front%2BPage%2B1%2B-%2BGolden%2BLinking%2BLookout%2BFEature%2Bin%2BCPWJ%2BShot%2B2.jpg Homepage overhaul https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614718347966-NFCGCPPM2UPKSTOZWOAW/Front%2BPage%2B2%2BCatamount_Bridge%2BConstruction_2016-05-23_1.jpg Homepage overhaul https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614717322569-F62VO60XN1UUVF4HX2IZ/Front%2Bpage%2B4%2Bgreat%2Btransit%2B28963412902_f3127d2b20_o.jpg Homepage overhaul https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614716906153-WMJE3QJEAGZYKDFINRQU/Front+Page+5+CFL+Completed%2BAlexander%2BAvenue%2BCut%2Band%2BMSE%2Bwall%2Bfrom%2Babove%2Bnear%2BHwy%2B101%2BWaldo%2Btunnels.jpg Homepage overhaul https://www.yeh-eng.com/home-page-gallery daily 0.75 2021-03-02 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614718294692-7I1EPMPF1L4HSRG6J1E3/Front%2BPage%2B3%2BGlenwood%2BCanyon%2BPhase%2B4.jpg Home page gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614718294692-7I1EPMPF1L4HSRG6J1E3/Front%2BPage%2B3%2BGlenwood%2BCanyon%2BPhase%2B4.jpg Home page gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614717281405-0A6TJZZIKMMUGY5RTMRO/Front%2BPage%2B1%2B-%2BGolden%2BLinking%2BLookout%2BFEature%2Bin%2BCPWJ%2BShot%2B2.jpg Home page gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614718347966-NFCGCPPM2UPKSTOZWOAW/Front%2BPage%2B2%2BCatamount_Bridge%2BConstruction_2016-05-23_1.jpg Home page gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614717322569-F62VO60XN1UUVF4HX2IZ/Front%2Bpage%2B4%2Bgreat%2Btransit%2B28963412902_f3127d2b20_o.jpg Home page gallery https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1614716906153-WMJE3QJEAGZYKDFINRQU/Front+Page+5+CFL+Completed%2BAlexander%2BAvenue%2BCut%2Band%2BMSE%2Bwall%2Bfrom%2Babove%2Bnear%2BHwy%2B101%2BWaldo%2Btunnels.jpg Home page gallery https://www.yeh-eng.com/employment-2 daily 0.75 2022-08-18 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1660851446203-4RCDRW97JB7JGVENXCB8/1626737852755.jpg Employment https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/80702258-d827-4080-803d-0274e83fe0e8/DSCN1112a.jpg Employment - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.yeh-eng.com/contact daily 0.75 2024-09-03 https://www.yeh-eng.com/about daily 0.75 2025-07-30 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558031431458-P9TI0UZNV8H8RNL89PSE/YA+in+Sedona+AZ+CFL+Yavapai+County+Projects+214-143.jpg About https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1555009965889-87XDKU3BYOXTZ1LMO6KE/Shan-Tai+Yeh_Formal-2_HighRes_Nov2015+Square.jpg About - Shan-Tai Yeh, PE President and Founder https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/17518eda-2614-40df-87f2-07d3b6f98add/Todd+Square.jpg About - Todd Schlittenhart, PE Director of Engineering Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1ec1860d-7380-421e-ad71-e0555ba4b261/Calvin+square.jpg About - Calvin Yeh, PE Director of Administrative Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/a83dd116-a14d-4b6e-96aa-6bc52eb86dfa/Clint+Moyer_Square.jpg About - Clinton Moyer, PE Director of Construction Services https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1580332978717-5SHRGH7CJPXNAZMCC2I4/blanchard_jon_suit.jpg About - Jon Blanchard, GE, PE Director of Pacific Region https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/0275034d-edad-4f8e-97e6-a9fbe0bc527a/Pete+square.jpg About - Pete Mertes, PE Director of Branch Management https://www.yeh-eng.com/404 daily 0.75 2019-03-19 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1553032729936-63AQ0NHWBQ0HO6S9A1RI/Rockfall+in+Road.jpg Custom 404 - 404 The page you are looking for doesn’t exist or has been moved https://www.yeh-eng.com/gallery daily 0.75 2025-06-12 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1592430893238-OX53PEYZQ7IIUY6E1HQB/image-asset.jpeg Gallery - Canyonlands Field Airport Yeh is teamed with Armstrong Consultants, Inc. on this project at Canyonlands Field Airport in Moab, Utah. Yeh is providing geotechnical engineering recommendations and subsequent quality assurance / acceptance testing for the Taxiway A and Terminal Apron Reconstruction Project. In addition to Canyonlands, Yeh has 2020 contracts for engineering and construction services at San Luis (Alamosa), Cortez, Garfield County (Rifle), Rangely, and Grand Junction Regional Airports. We are looking forward to a busy year on the aviation front! https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1556645010276-91IGS33G4J125JLCJOJ8/Red+Rocks.jpg Gallery - Red Rocks Amphitheatre Over the last 18 years, Yeh has provided on-call geotechnical engineering, pavement design, materials testing and construction inspection services for several projects at Red Rocks: · Visitor Center and restroom facilities · Renovation of the amphitheater seating area · Condition review of the rock features and the installation of mitigation elements · Pavement Design for several parking areas · Utility building · Loading docks · Soil nail retaining walls https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1556645202097-11Y4K4GQ6WK6G1P7M5WN/Twin+Tunnels+completed+edited.jpg Gallery - Veterans Memorial Tunnels Yeh provided geotechnical engineering services for the east and westbound tunnels. Our services include a complete tunnel geotechnical investigation, portal rockslope design, rockfall protection, and deformation monitoring during widening. Additional services for this complex project included: · Tunnel geotechnical data report · Portal barrel design and portal rockfall protection design · Portal rock cut design and support · Tunnel Instrumentation · I-70 retaining walls and foundations Yeh also assisted in the roadway construction inspection, tunnel construction inspection and materials testing. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557346394886-XWS4IGJ9ZSSGGMZZ2FOS/IMG_5611.JPG Gallery - RTD South East Rail Extension The Southeast Rail Line Extension added 2.3 miles of light rail along I-25 from Lincoln Station, through the new Lone Tree City Center, to RidgeGate Parkway. The project included an end-of-line station, a five story parking structure with 1,300 parking spaces, bus transfer, and Kiss-N-Ride facilities. Yeh provided geotechnical engineering for design, along with construction quality inspections and materials testing for every aspect of construction including the retaining walls, three bridges, stations, parking structure, at-grade crossing, roads, and parking facilities. https://www.yeh-eng.com/employment daily 0.75 2025-04-25 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1558457495383-1YJADKLL0TDU2Z2M8TYI/Construction+Services+-+Quality+Assurance.JPG Employment https://www.yeh-eng.com/covid daily 0.75 2020-03-30 https://www.yeh-eng.com/sbo daily 0.75 2020-11-12 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1598996857621-JFXRIDXEDPJZW2Q0GU5G/image-asset.jpeg Small Business Outreach - Small Business Outreach Photo by Prostock-Studio/iStock / Getty Images https://www.yeh-eng.com/covid-button daily 0.75 2021-02-26 https://www.yeh-eng.com/covid-1 daily 0.75 2021-02-26 https://www.yeh-eng.com/new-page-1 daily 0.75 2021-03-04 https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557960212425-SD2XH2L4S48OWKNQ3LJU/US+6+Bridges.jpg New Page - US 6 Bridges Yeh performed construction QA, inspection, and materials testing for a rebuild of US 6 from Knox Court Bridge to the I-25 interchange. Project included building or replacement of 12 bridges, 26 retaining walls, construction of 5 miles of storm drains, and 15 lane miles of pavement. In addition, the project included improvements to four parks, a half mile bike path, new baseball and multi-use turf field, a new pedestrian bridge, sidewalks, and drainage/ irrigation. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557958778335-OCJOTG940VMJ4IQW0OPX/RTD+North+Metro.JPG New Page - RTD North Metro Rail Line The North Metro Rail Line (N Line) runs from Denver Union Station to 124th Avenue in Thornton. Yeh is providing geotechnical engineering services for all aspects of the retaining walls, bridges, and stations, and assisting at grade crossing and parking facilities. We also providing construction inspection and materials testing for all civil related work for all construction work. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557960054470-LZY74K70UVDYEDZYAQTF/Golden+drone+photo+10-6-17+DJI_0101.JPG New Page - Golden Linking Lookout Also known as US 6 and 19th Street Intersection, Yeh provided the construction management and inspection staff to the City of Golden to complete the local agency ‘Linking Lookout’ interchange project. This 4-phase project included a signature structure, deep foundations, park and pedestrian access, bicycle access and new pedestrian trails, numerous retaining walls of various types, and deep utility relocations. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1557958828602-B9UPJ4CI8PKWZ1CSMUX1/IMG_5518.JPG New Page - RTD Southeast Rail Extension (SERE) The Southeast Rail Line Extension added 2.3 miles of light rail along I-25 from Lincoln Station, through the new Lone Tree City Center, to RidgeGate Parkway. The project included an end-of-line station, a five story parking structure with 1,300 parking spaces, bus transfer, and Kiss-N-Ride facilities. Yeh provided geotechnical engineering for design, along with construction quality inspections and materials testing for every aspect of construction including the retaining walls, three bridges, stations, parking structure, at-grade crossing, roads, and parking facilities. https://images.squarespace-cdn.com/content/v1/5c83e306809d8e6cbb8a6296/1560788061346-X4LEH0EQYLUVSDPVJDMX/Cimarron.jpg New Page - I-25 Cimarron Interchange Yeh provided materials testing and documentation as the Owners Verification Testing Service for the US 24 corridor improvements.