US Bridges

Nfa 1137 (sa 8916) over Dry Branch

FairPosted for load

Warren County, Tennessee · 5 MI North of SR 1 · Structure no. 89S43990007

Built
1961
64 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
100 ft
3 main spans
Daily traffic
921
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1137 (sa 8916) over Dry Branch is a concrete tee beam carrying Nfa 1137 (sa 8916) over Dry Branch in Warren County, Tennessee. It was built in 1961, so it is 64 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 921 vehicles a day, roughly 3% of them trucks, projected to reach 1,474 by 2042. The structure is 100 ft (30.5 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 1137 (sa 8916)
CrossesDry Branch
Location5 MI North of SR 1
RouteCounty Highway 1137
CountyWarren County
StateTennessee
Coordinates35.74188, -85.74371
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span43 ft (13.1 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic921 (2021)
Projected traffic1,474 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$179,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1137 (sa 8916) over Dry Branch built?

It was built in 1961, making it 64 years old in 2025.

What condition is Nfa 1137 (sa 8916) over Dry Branch 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 April 2023.

How much traffic does Nfa 1137 (sa 8916) over Dry Branch carry?

About 921 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1137 (sa 8916) over Dry Branch?

The structure is 100 ft (30.5 m) long with a longest span of 43 ft (13.1 m) and a deck 29 ft wide.

Who owns Nfa 1137 (sa 8916) over Dry Branch?

It is owned by the County Highway Agency.