US Bridges

Nfa 2475 over Branch

Fair

Grainger County, Tennessee · South of SR1 · Structure no. 290A6670001

Built
2002
23 years old
Condition
Fair
inspected April 2023
Type
Culvert
Steel
Length
25 ft
4 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa 2475 over Branch is a steel culvert carrying Nfa 2475 over Branch in Grainger County, Tennessee. It was built in 2002, so it is 23 years old, younger 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 20 vehicles a day, roughly 1% of them trucks, projected to reach 32 by 2041. The structure is 25 ft (7.6 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa 2475
CrossesBranch
LocationSouth of SR1
RouteCounty Highway 667
CountyGrainger County
StateTennessee
Coordinates36.2648, -83.64882
Functional classRural 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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span6 ft (1.8 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2475 over Branch built?

It was built in 2002, making it 23 years old in 2025.

What condition is Nfa 2475 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 April 2023.

How much traffic does Nfa 2475 over Branch carry?

About 20 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa 2475 over Branch?

The structure is 25 ft (7.6 m) long with a longest span of 6 ft (1.8 m) and a deck 20 ft wide.

Who owns Nfa 2475 over Branch?

It is owned by the County Highway Agency.