US Bridges

Nfa A057 over Branch

Fair

Williamson County, Tennessee · 1.7 MI SW JCT SR46&SR96 · Structure no. 940A0570003

Built
1980
45 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
77 ft
2 main spans
Daily traffic
170
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A057 over Branch is a concrete continuous culvert carrying Nfa A057 over Branch in Williamson County, Tennessee. It was built in 1980, so it is 45 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 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 170 vehicles a day, roughly 2% of them trucks, projected to reach 272 by 2041. The structure is 77 ft (23.4 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNfa A057
CrossesBranch
Location1.7 MI SW JCT SR46&SR96
RouteCounty Highway 57
CountyWilliamson County
StateTennessee
Coordinates35.93889, -86.97183
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length77 ft (23.4 m)
Longest span37 ft (11.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2020)
Projected traffic272 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 with deck rehabilitation or replacement
Estimated improvement cost$182,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A057 over Branch built?

It was built in 1980, making it 45 years old in 2025.

What condition is Nfa A057 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 May 2023.

How much traffic does Nfa A057 over Branch carry?

About 170 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A057 over Branch?

The structure is 77 ft (23.4 m) long with a longest span of 37 ft (11.2 m) and a deck 26 ft wide.

Who owns Nfa A057 over Branch?

It is owned by the County Highway Agency.