US Bridges

Nfa A456 over Branch

Good

Sumner County, Tennessee · 1.4 MI SE JCT SR41&SR258 · Structure no. 830A4560001

Built
1984
41 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
400
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A456 over Branch is a concrete continuous culvert carrying Nfa A456 over Branch in Sumner 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 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 400 vehicles a day, roughly 2% of them trucks, projected to reach 640 by 2041. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa A456
CrossesBranch
Location1.4 MI SE JCT SR41&SR258
RouteCounty Highway 0A456
Coordinates36.46202, -86.62959
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic640 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 A456 over Branch built?

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

What condition is Nfa A456 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 January 2025.

How much traffic does Nfa A456 over Branch carry?

About 400 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A456 over Branch?

The structure is 39 ft (11.9 m) long with a longest span of 10 ft (3 m).

Who owns Nfa A456 over Branch?

It is owned by the County Highway Agency.