US Bridges

Nfa A312 over Branch

Fair

Davidson County, Tennessee · In Nashville · Structure no. 190C8270001

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
240
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A312 over Branch is a concrete continuous culvert carrying Nfa A312 over Branch in Davidson County, Tennessee. It was built in 1950, so it is 75 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 240 vehicles a day, roughly 2% of them trucks, projected to reach 384 by 2041. The structure is 36 ft (11 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A312
CrossesBranch
LocationIn Nashville
RouteCity Street 312
CountyDavidson County
StateTennessee
Coordinates36.32725, -86.73167
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2020)
Projected traffic384 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$259,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A312 over Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A312 over Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Nfa A312 over Branch carry?

About 240 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A312 over Branch?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Nfa A312 over Branch?

It is owned by the City or Municipal Highway Agency.