US Bridges

Nfa A310 over Branch

Good

Madison County, Tennessee · 3.1 MI SW JCT SR197&SR198 · Structure no. 570A3100001

Built
2022
3 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
75 ft
1 main span
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A310 over Branch is a concrete box beam or girders - multiple carrying Nfa A310 over Branch in Madison County, Tennessee. It was built in 2022, so it is 3 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 200 vehicles a day, roughly 4% of them trucks, projected to reach 320 by 2042. The structure is 75 ft (22.9 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A310
CrossesBranch
Location3.1 MI SW JCT SR197&SR198
RouteCounty Highway 310
CountyMadison County
StateTennessee
Coordinates35.56816, -88.6973
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length75 ft (22.9 m)
Longest span75 ft (22.9 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic320 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$995,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A310 over Branch built?

It was built in 2022, making it 3 years old in 2025.

What condition is Nfa A310 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 A310 over Branch carry?

About 200 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A310 over Branch?

The structure is 75 ft (22.9 m) long with a longest span of 75 ft (22.9 m) and a deck 26 ft wide.

Who owns Nfa A310 over Branch?

It is owned by the County Highway Agency.