Commission review: Tennessee infrastructure needs top $82.7 billion; bridge methodology drives much of increase
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Summary
Staff presented the five‑year public infrastructure needs inventory, reporting $82.7 billion in statewide needs driven largely by transportation and a change in bridge assessment methodology; commissioners asked for TDOT follow‑up on timelines and cost carryover.
Tyler Carpenter, the commission's research manager, presented the five‑year public infrastructure needs inventory covering July 2024 through June 2029 and asked commissioners to approve the final report. The inventory shows a statewide estimated need of about $82.7 billion, an increase of roughly $5.0 billion from the prior report, with transportation and utilities representing the largest increases.
Carpenter highlighted that a change in Tennessee Department of Transportation (TDOT) bridge assessment methodology—moving away from federal sufficiency ratings to a nine‑point deck/superstructure/substructure/culvert scale—caused a notable increase in bridges designated as needing replacement. He said transportation continues to represent the largest category of unmet need and that many projects remain in the inventory across multiple years because projects carry forward until completed.
Commissioners asked whether the inventory reports are inflation‑adjusted and how project carryover and P3 contracts will be reflected. Carpenter said previous years were adjusted for inflation in trend figures, the inventory carries forward unchanged projects until completion, and that public ownership determines inclusion. He agreed to follow up with TDOT on project delivery timelines and to provide data requested by members.
The commission approved the inventory by voice vote.