US Bridges

Nfa A425 over Branch

Good

Macon County, Tennessee · 7 M SE Lafayette · Structure no. 560A4240001

Built
1970
55 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A425 over Branch is a concrete continuous culvert carrying Nfa A425 over Branch in Macon County, Tennessee. It was built in 1970, so it is 55 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 80 vehicles a day, roughly 5% of them trucks, projected to reach 128 by 2041. The structure is 27 ft (8.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A425
CrossesBranch
Location7 M SE Lafayette
RouteCounty Highway 425
CountyMacon County
StateTennessee
Coordinates36.44507, -85.94772
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span10 ft (3 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$37,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A425 over Branch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A425 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 September 2023.

How much traffic does Nfa A425 over Branch carry?

About 80 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A425 over Branch?

The structure is 27 ft (8.2 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Nfa A425 over Branch?

It is owned by the County Highway Agency.