US Bridges

Nfa A518 over Branch

Good

Davidson County, Tennessee · In Nashville · Structure no. 190D3190001

Built
1990
35 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
45 ft
2 main spans
Daily traffic
330
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A518 over Branch is a concrete continuous culvert carrying Nfa A518 over Branch in Davidson County, Tennessee. It was built in 1990, so it is 35 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 330 vehicles a day, roughly 2% of them trucks, projected to reach 528 by 2041. The structure is 45 ft (13.7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A518
CrossesBranch
LocationIn Nashville
RouteCity Street 518
CountyDavidson County
StateTennessee
Coordinates36.25697, -86.71011
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2020)
Projected traffic528 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$101,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A518 over Branch built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nfa A518 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 July 2023.

How much traffic does Nfa A518 over Branch carry?

About 330 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A518 over Branch?

The structure is 45 ft (13.7 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa A518 over Branch?

It is owned by the City or Municipal Highway Agency.