US Bridges

Nfa A373 over Branch

Fair

Madison County, Tennessee · 1.6 MI NW JCT SR18&HARDEM · Structure no. 570A3730003

Built
1984
41 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
440
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A373 over Branch is a concrete continuous culvert carrying Nfa A373 over Branch in Madison County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 5 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 440 vehicles a day, roughly 7% of them trucks, projected to reach 704 by 2041. The structure is 40 ft (12.2 m) long and 41 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesNfa A373
CrossesBranch
Location1.6 MI NW JCT SR18&HARDEM
RouteCounty Highway 373
CountyMadison County
StateTennessee
Coordinates35.44817, -88.89217
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating60.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width41 ft (12.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic440 (2020)
Projected traffic704 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 A373 over Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A373 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 May 2023.

How much traffic does Nfa A373 over Branch carry?

About 440 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Nfa A373 over Branch?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 41 ft wide.

Who owns Nfa A373 over Branch?

It is owned by the County Highway Agency.