US Bridges

Nfa 1922 (sa 9402) over Branch

Good

Williamson County, Tennessee · 8.3 M SE JCT SR46&SR100 · Structure no. 94019220007

Built
1987
38 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
189
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1922 (sa 9402) over Branch is a concrete culvert carrying Nfa 1922 (sa 9402) over Branch in Williamson County, Tennessee. It was built in 1987, so it is 38 years old, younger 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 189 vehicles a day, roughly 3% of them trucks, projected to reach 208 by 2039. The structure is 23 ft (7 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 1922 (sa 9402)
CrossesBranch
Location8.3 M SE JCT SR46&SR100
RouteCounty Highway 1922
CountyWilliamson County
StateTennessee
Coordinates35.83863, -87.15377
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span16 ft (4.9 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189 (2021)
Projected traffic208 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1922 (sa 9402) over Branch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nfa 1922 (sa 9402) 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 June 2023.

How much traffic does Nfa 1922 (sa 9402) over Branch carry?

About 189 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1922 (sa 9402) over Branch?

The structure is 23 ft (7 m) long with a longest span of 16 ft (4.9 m) and a deck 29 ft wide.

Who owns Nfa 1922 (sa 9402) over Branch?

It is owned by the County Highway Agency.