US Bridges

Nfa A975 over Branch

Fair

Sumner County, Tennessee · 4.4 MI NE JCT SR109&SR174 · Structure no. 830A9750003

Built
1950
75 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
350
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A975 over Branch is a concrete continuous culvert carrying Nfa A975 over Branch in Sumner County, Tennessee. It was built in 1950, so it is 75 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.

It carries about 350 vehicles a day, roughly 10% of them trucks, projected to reach 560 by 2041. The structure is 29 ft (8.8 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A975
CrossesBranch
Location4.4 MI NE JCT SR109&SR174
RouteCounty Highway 0A975
CountySumner County
StateTennessee
Coordinates36.4505, -86.39127
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span10 ft (3 m)
Deck width23 ft (7.1 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2020)
Projected traffic560 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$98,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A975 over Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A975 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 November 2024.

How much traffic does Nfa A975 over Branch carry?

About 350 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Nfa A975 over Branch?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m) and a deck 23 ft wide.

Who owns Nfa A975 over Branch?

It is owned by the County Highway Agency.