US Bridges

Nfa A474 over Branch

Good

Cannon County, Tennessee · Southeast of Woodbury · Structure no. 080A4470001

Built
2015
10 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A474 over Branch is a concrete continuous culvert carrying Nfa A474 over Branch in Cannon County, Tennessee. It was built in 2015, so it is 10 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 50 vehicles a day, roughly 4% of them trucks, projected to reach 80 by 2039. The structure is 32 ft (9.8 m) long and 19 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A474
CrossesBranch
LocationSoutheast of Woodbury
RouteCounty Highway 447
Coordinates35.79607, -86.04301
Functional classRural Local

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span16 ft (4.9 m)
Deck width19 ft (5.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic80 by 2039
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A474 over Branch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Nfa A474 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 2023.

How much traffic does Nfa A474 over Branch carry?

About 50 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A474 over Branch?

The structure is 32 ft (9.8 m) long with a longest span of 16 ft (4.9 m) and a deck 19 ft wide.

Who owns Nfa A474 over Branch?

It is owned by the County Highway Agency.