Sterling Highway MP 45-60 Juneau Creek Bridge Stage 2 CM/GC

As part of a Joint Venture with QAP, Traylor is delivering the Sterling Highway MP 45–60 Juneau Creek Bridge under a CM/GC contract for the Alaska Department of Transportation and Public Facilities (DOT&PF). The project modernizes a critical segment of the Sterling Highway between Anchorage and the Kenai Peninsula, addressing longstanding safety and congestion issues through Cooper Landing while preserving the surrounding environment.

The scope includes construction of approximately 10 miles of new highway north of Cooper Landing, reconstruction of the east and west ends of the existing roadway, and major geometric and safety improvements such as widened shoulders, realigned curves, passing lanes, shared-use pathways, and wildlife crossings. Traffic studies indicate that roughly 70 percent of vehicles will shift to the new alignment, significantly reducing congestion through the community.

At the center of the project is the Juneau Creek Bridge, a 950-foot-long steel plate-girder structure spanning Juneau Creek Canyon and rising nearly 285 feet above the canyon floor. Once complete, it will be the highest highway crossing in Alaska and the longest single-span bridge constructed in the state since 1982. Faced with strict environmental constraints that prohibit work in the canyon, Traylor is assembling the superstructure behind the abutment and hydraulically launching it across the canyon. This approach enhances safety, constructability, and environmental protection.

All 45 steel girders were successfully fabricated, delivered, and erected in 2025, positioning the bridge for final launch and completion. The project also includes new highway connections, a Resurrection Pass Trailhead and parking area, and extensive wildlife infrastructure, including Alaska’s first highway wildlife overpass. Together, these elements reflect Traylor’s ability to execute complex, large-scale bridge construction in remote and environmentally sensitive conditions.