HELENA, Mont. (NMB) – The Montana Department of Transportation (MDT) has begun implementation of new load posting procedures on public bridges across the state as mandated by the Federal Highway Administration (FHWA).
As a result, motorists may soon notice new weight limits and signs on some bridges.
Bridge weight restrictions are required when the engineering analysis of a bridge indicates that it cannot carry standard, legal loads. Load posting signs show maximum weight limits for different vehicle types, depending on their axle configuration.
MDT is currently updating load ratings for 4,500 public bridges across the state, including approximately 2,500 owned and maintained by MDT. This effort is expected to take about four years to complete.
Weight restrictions do not mean a bridge is unsafe, as long as vehicles meet posted limitations.
To assist with public outreach and education, MDT is creating interactive maps and other information available for the public, as they continue the bridge load posting program. For the most up-to-date information and additional resources, visit MDT’s Bridge Load Posting Program website.