US Bridges

Nfa A257 over Branch

Fair

Washington County, Tennessee · In Very NW Corner of Co. · Structure no. 900A1810001

Built
1942
83 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
33 ft
3 main spans
Daily traffic
620
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A257 over Branch is a concrete slab carrying Nfa A257 over Branch in Washington County, Tennessee. It was built in 1942, so it is 83 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.

It carries about 620 vehicles a day, roughly 2% of them trucks, projected to reach 992 by 2042. The structure is 33 ft (10.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNfa A257
CrossesBranch
LocationIn Very NW Corner of Co.
RouteCounty Highway 257
CountyWashington County
StateTennessee
Coordinates36.43022, -82.63927
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span10 ft (3.2 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic620 (2020)
Projected traffic992 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$125,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A257 over Branch built?

It was built in 1942, making it 83 years old in 2025.

What condition is Nfa A257 over 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 June 2024.

How much traffic does Nfa A257 over Branch carry?

About 620 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A257 over Branch?

The structure is 33 ft (10.2 m) long with a longest span of 10 ft (3.2 m) and a deck 24 ft wide.

Who owns Nfa A257 over Branch?

It is owned by the County Highway Agency.