Analysis Will Help State and Local Governments Identify Cost-Effective Short-Span Bridge OptionsPosted: Aug 31, 2020
The researchers concluded that the precast concrete culvert is a cost-effective option for structures shorter than 30 feet if the hydrological condition allows. A cast-in-place concrete slab bridge is a good option for longer multi-span applications because it eliminates problematic joints. Prestressed tee bridges have consistent performance and cost-effectiveness for all span requirements over 30 feet. The newly adopted construction method using precast I girders with cast-in-place bridge decks shows superior performance and cost effectiveness at mid- to long-span applications when compared with prestressed tee bridges. However, both the I-girders with cast-in-place deck and precast culverts have relatively short histories and track records in South Dakota. Their performance should be monitored closely in the future to verify their cost-effectiveness. Shiling Pei, Ph.D. Evaluation of Cost Effectiveness, Performance, and Selection Criteria for Concrete Structures |