US Bridges

Nfa 1958 (sa 7409) over Branch

Good

Robertson County, Tennessee · 3 MI N JCT I24&SR49 · Structure no. 74S62800001

Built
1950
75 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
339
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1958 (sa 7409) over Branch is a concrete tee beam carrying Nfa 1958 (sa 7409) over Branch in Robertson 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 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 339 vehicles a day, roughly 3% of them trucks, projected to reach 416 by 2040. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNfa 1958 (sa 7409)
CrossesBranch
Location3 MI N JCT I24&SR49
RouteCounty Highway 1958
Coordinates36.44487, -87.01915
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic339 (2021)
Projected traffic416 by 2040
Trucks3%
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 of existing bridge without deck rehabilitation
Estimated improvement cost$91,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1958 (sa 7409) over Branch built?

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

What condition is Nfa 1958 (sa 7409) 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 May 2024.

How much traffic does Nfa 1958 (sa 7409) over Branch carry?

About 339 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1958 (sa 7409) over Branch?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.

Who owns Nfa 1958 (sa 7409) over Branch?

It is owned by the County Highway Agency.