US Bridges

Nfa 2516 (sa 4527) over I81

FairPosted for load

Jefferson County, Tennessee · NE of SR341 Exit · Structure no. 45I00810011

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
302 ft
5 main spans
Daily traffic
414
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 2516 (sa 4527) over I81 is a concrete continuous tee beam carrying Nfa 2516 (sa 4527) over I81 in Jefferson County, Tennessee. It was built in 1966, so it is 59 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 414 vehicles a day, roughly 3% of them trucks, projected to reach 662 by 2042. The structure is 302 ft (92 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 2516 (sa 4527)
CrossesI81
LocationNE of SR341 Exit
RouteCounty Highway 2516
CountyJefferson County
StateTennessee
Coordinates36.1183, -83.32768
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating13.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length302 ft (92 m)
Longest span67 ft (20.4 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic414 (2021)
Projected traffic662 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$469,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 2516 (sa 4527) over I81 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Nfa 2516 (sa 4527) over I81 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Nfa 2516 (sa 4527) over I81 carry?

About 414 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2516 (sa 4527) over I81?

The structure is 302 ft (92 m) long with a longest span of 67 ft (20.4 m) and a deck 29 ft wide.

Who owns Nfa 2516 (sa 4527) over I81?

It is owned by the State Highway Agency.