US Bridges

Nfa 920 over I-40

FairPosted for load

Hickman County, Tennessee · 1 M NW of Only · Structure no. 41I00400001

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
244 ft
4 main spans
Daily traffic
85
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 920 over I-40 is a concrete continuous tee beam carrying Nfa 920 over I-40 in Hickman 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. Its operating status is: posted for load restriction.

It carries about 85 vehicles a day, roughly 2% of them trucks, projected to reach 136 by 2042. The structure is 244 ft (74.4 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 920
CrossesI-40
Location1 M NW of Only
RouteCounty Highway 920
CountyHickman County
StateTennessee
Coordinates35.87447, -87.7099
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.9 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length244 ft (74.4 m)
Longest span70 ft (21.3 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2021)
Projected traffic136 by 2042
Trucks2%
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$1.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 920 over I-40 built?

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

What condition is Nfa 920 over 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 July 2024.

How much traffic does Nfa 920 over I-40 carry?

About 85 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Nfa 920 over I-40?

The structure is 244 ft (74.4 m) long with a longest span of 70 ft (21.3 m) and a deck 29 ft wide.

Who owns Nfa 920 over I-40?

It is owned by the State Highway Agency.