US Bridges

Nfa A975 over Branch

Good

Sumner County, Tennessee · 4.8 MI NE JCT SR109&SR174 · Structure no. 830A9750001

Built
1975
50 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
330
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A975 over Branch is a concrete culvert carrying Nfa A975 over Branch in Sumner County, Tennessee. It was built in 1975, so it is 50 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 330 vehicles a day, roughly 10% of them trucks, projected to reach 528 by 2041. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A975
CrossesBranch
Location4.8 MI NE JCT SR109&SR174
RouteCounty Highway 0A975
Coordinates36.45705, -86.39017
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2020)
Projected traffic528 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$103,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A975 over Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is Nfa A975 over Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Nfa A975 over Branch carry?

About 330 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Nfa A975 over Branch?

The structure is 32 ft (9.8 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns Nfa A975 over Branch?

It is owned by the County Highway Agency.