US Bridges

Nfa A143 (sa 9436) over Branch

Good

Williamson County, Tennessee · 3.0 MI S JCT SR11&SR253 · Structure no. 940A1430003

Built
1915
110 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
630
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A143 (sa 9436) over Branch is a concrete slab carrying Nfa A143 (sa 9436) over Branch in Williamson County, Tennessee. It was built in 1915, so it is 110 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 630 vehicles a day, roughly 2% of them trucks, projected to reach 1,008 by 2041. The structure is 24 ft (7.3 m) long and 27 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesNfa A143 (sa 9436)
CrossesBranch
Location3.0 MI S JCT SR11&SR253
RouteCounty Highway 143
CountyWilliamson County
StateTennessee
Coordinates35.95194, -86.68103
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionApril 2023
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 rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2020)
Projected traffic1,008 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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$79,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A143 (sa 9436) over Branch built?

It was built in 1915, making it 110 years old in 2025.

What condition is Nfa A143 (sa 9436) 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 April 2023.

How much traffic does Nfa A143 (sa 9436) over Branch carry?

About 630 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A143 (sa 9436) over Branch?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 27 ft wide.

Who owns Nfa A143 (sa 9436) over Branch?

It is owned by the County Highway Agency.