US Bridges

Nfa B350 over Branch

Good

Maury County, Tennessee · 3 M. Ne. Columbia · Structure no. 600B3500001

Built
1999
26 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,161
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B350 over Branch is a concrete continuous culvert carrying Nfa B350 over Branch in Maury County, Tennessee. It was built in 1999, so it is 26 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 1,161 vehicles a day, roughly 13% of them trucks, projected to reach 2,128 by 2040. The structure is 22 ft (6.8 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa B350
CrossesBranch
Location3 M. Ne. Columbia
RouteCounty Highway 350
Coordinates35.6404, -87.01199
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.8 m)
Longest span12 ft (3.7 m)
Deck width38 ft (11.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,161 (2021)
Projected traffic2,128 by 2040
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B350 over Branch built?

It was built in 1999, making it 26 years old in 2025.

What condition is Nfa B350 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 2024.

How much traffic does Nfa B350 over Branch carry?

About 1,161 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Nfa B350 over Branch?

The structure is 22 ft (6.8 m) long with a longest span of 12 ft (3.7 m) and a deck 38 ft wide.

Who owns Nfa B350 over Branch?

It is owned by the City or Municipal Highway Agency.