Performance Measures for Pavement and Bridge Condition
This final rule, which took effect on May 20, 2017, established measures for State DOTs to carry out the National Highway Performance Program (NHPP) and to assess the condition of pavements on the non-Interstate National Highway System (NHS); pavements on the Interstate System; and bridges carrying the NHS, including on- and off-ramps connecting to the NHS.
The performance measures under this rule are:
Percent of NHS Bridges in Good Condition
Percent of NHS Bridges in Poor Condition
Percentage of Interstate pavements in Good Condition
Percentage of Interstate pavements in Poor Condition
Percentage of non-Interstate NHS pavements in Good Condition
Percentage of non-Interstate NHS pavements in Poor Condition
As of January 2025 (i.e. 2-Year and 4-Year reporting cycle), MATS Policy Committee elected to support the MDOT adjusted targets for the areas of NHS Bridge & Pavement Condition. These targets are shown below. To support these targets, MATS will continue ongoing coordination with the State and other safety stakeholders to address areas of concern, and agreeing to plan and program projects that contribute toward meeting these State targets.
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The information below provides a progress update on statewide highway infrastructure performance measures for pavement and bridges reported to FHWA for 2022.
The table depicts Baseline, Target, and Actual conditions as percentages of the network for each measure.
For more data and information: Click Here for the State Highway Infrastructure Report Dashboard
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• Condition improvement is estimated based on projects programmed through the MDOT capital program, both MDOT and local agency. The improvement is applied the year after the date of letting.
• Deterioration is estimated based on comparing network wide deterioration rates to the age and condition of each major component of each structure.
• The targets are highly dependent on the deck area of bridges that fall to poor, and so the smaller the inventory considered, the higher potential for a single bridge to skew results. The statewide targets are assumed to be less variable than an individual MPO.
The graphic below represents the revised state 4-year bridge targets, as supported by MATS in 2022.
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Title 23 CFR §650, Subpart C - National Bridge Inspection Standards (NBIS), defines a bridge as a structure carrying traffic with a span greater than 20 feet and requires that all bridges be inspected every two years to monitor and report condition ratings. The FHWA requires that for each applicable bridge, the performance measures for determining condition be based on the minimum values for substructure, superstructure, deck, and culverts. The FHWA further requires counting this condition by the respective deck area of each bridge and express condition totals as a percentage of the total deck area of bridges in a state.
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