This $46M project involved the replacement of five bridges along OR38 in between the cities of Drain and Elkton using the design-build delivery method. The project also included upgrades to the OR38/OR138 intersection.
- Use of Accelerated Bridge Construction on the two bridges keeping road closures, on both sides of tunnel, to less than 48 hours during final placement
- Long span, high performance prestressed concrete girders used throughout
- Use of ASTM A588 weathering steel girders
- Innovative engineering techniques used to comply with Migratory Species Act
Two of the five bridges were replaced using Accelerated Bridge Construction technique (Rapid Bridge Replacement), in which the new structures are built adjacent to the existing structures, then “slid” into place after removal of the existing structures. Traffic control solutions were designed at five of the six project sites to maintain two lanes of traffic at all times during construction.
TYLI staff also performed roadway geometrics engineering, including design of a new left-turn lane to the OR38/138 intersection, design of a new alignment at one of the bridge sites, and approach roadway design at the other bridge locations. Project engineering included an intensive amount of environmental mitigation requiring analysis for permit applications and compliance with the Migratory Species Act, archaeological findings, and water quality measures; and clear zone right-of-way development involving an intensive use of MicroStation, InRoads, and HEC-RAS software to perform engineering design and calculations.
The project also included a public involvement effort that integrated the local high schools into the project development. Students designed the architectural concrete pylons constructed at the four corners at the bridge near Elkton and constructed the formwork that was used to construct the pylons.
- Aon Build America Award for Best New Highway, 2010
Associated General Contractors of America (AGC of America)
- No. 8 in Top 10 Bridge List, 2010
Roads and Bridges
- Top Project, First Place Public Works/ Infrastructure/Transportation (More than $15M), 2009
Daily Journal of Commerce
- Grand Award, 2009
American Council of Engineering Companies of Oregon (ACEC Oregon)
- National Project of the Year Award, 2009
American Public Works Association (APWA)
- America's Transportation Regional Award for On Time, Medium Project ($26-$199M), 2009
American Association of State Highway and Transportation Officials (AASHTO)