US Bridges

Nfa A307 over Coxburg Rd. / I-40

Fair

Benton County, Tennessee · 2.9 MI E JCT SR6&SR192 · Structure no. 03I00400005

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
248 ft
4 main spans
Daily traffic
80
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A307 over Coxburg Rd. / I-40 is a concrete continuous tee beam carrying Nfa A307 over Coxburg Rd. / I-40 in Benton County, Tennessee. It was built in 1965, so it is 60 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 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 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2042. The structure is 248 ft (75.7 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesNfa A307
CrossesCoxburg Rd. / I-40
Location2.9 MI E JCT SR6&SR192
RouteCounty Highway 307
CountyBenton County
StateTennessee
Coordinates35.86883, -88.03233
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length248 ft (75.7 m)
Longest span72 ft (21.9 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed13 mi (21 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$1.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A307 over Coxburg Rd. / I-40 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A307 over Coxburg Rd. / I-40 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 February 2024.

How much traffic does Nfa A307 over Coxburg Rd. / I-40 carry?

About 80 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A307 over Coxburg Rd. / I-40?

The structure is 248 ft (75.7 m) long with a longest span of 72 ft (21.9 m) and a deck 29 ft wide.

Who owns Nfa A307 over Coxburg Rd. / I-40?

It is owned by the State Highway Agency.