US Bridges

Nfa A080 over Wilson Rd. / I-75

Fair

Knox County, Tennessee · 1.5 M W of Sharps Gap · Structure no. 47I00750021

Built
1981
44 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
320 ft
2 main spans
Daily traffic
6,050
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa A080 over Wilson Rd. / I-75 is a concrete continuous box beam or girders - multiple carrying Nfa A080 over Wilson Rd. / I-75 in Knox County, Tennessee. It was built in 1981, so it is 44 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,050 vehicles a day, roughly 1% of them trucks, projected to reach 7,123 by 2042. The structure is 320 ft (97.5 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A080
CrossesWilson Rd. / I-75
Location1.5 M W of Sharps Gap
RouteCity Street 80
CountyKnox County
StateTennessee
Coordinates35.98715, -83.97293
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span160 ft (48.8 m)
Deck width40 ft (12.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,050 (2021)
Projected traffic7,123 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A080 over Wilson Rd. / I-75 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nfa A080 over Wilson Rd. / I-75 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 January 2025.

How much traffic does Nfa A080 over Wilson Rd. / I-75 carry?

About 6,050 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa A080 over Wilson Rd. / I-75?

The structure is 320 ft (97.5 m) long with a longest span of 160 ft (48.8 m) and a deck 40 ft wide.

Who owns Nfa A080 over Wilson Rd. / I-75?

It is owned by the State Highway Agency.