Washington: Eastbound, State Route 18 Over State Route 516, King County

Details

• Corporate Creators:
  United States. Federal Highway Administration
• Corporate Contributors:
  Turner-Fairbank Highway Research Center
• Subject/TRT Terms:
  • Highway bridges
  • High performance concrete
  • Bridge design
  • Bridges
  • Compressive strength
  • Design
  • Prestressed concrete bridges
  • Prestressed concrete
  • High-Performance Concrete program
• Publication/ Report Number:
  FHWA-RD-00-124
• Resource Type:
  Brief
• Geographical Coverage:
  Washington
• Corporate Publisher:
  United States. Federal Highway Administration
• Description:
  The high-performance concrete bridge carrying eastbound State Route 18 traffic over State Route 516 in King County, Washington is a three-span continuous structure, with a center span of 42 m (137 ft) and side spans of 24 m (80 ft). Pretensioned concrete Washington State Department of Transportation W74G girders were used. The bridge deck is 11.6 m (38 ft) wide, carrying two 3.7-m (12-ft) lanes and 1.2-m (4-ft) and 3.0-m (10-ft) shoulders. The bridge is designed for earthquake zone "C" (acceleration coefficient = 0.25 g). The design used the new AASHTO Load and Resistance Factor Design (LRFD) bridge specifications. Using high-strength HPC in conjunction with the 15.2-mm (0.6-in.) strands, two fewer girders per span were required than if conventional concrete and strands had been used. The structure's life will be enhanced because of the durability benefits associated with HPC.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/40747/dot_40747_DS1.pdf
• File Type:
  [PDF - 54.33 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:c4b59d9db3d07ed4c4aa9c85500667d8552aedb0dbd6ca2149be9f0603d129007f7eed71a13cf2f25a68d065f3085807b5003e34d8a0e8068caac9c2b8e655f1