US Bridges

Nfa A146 over Branch

Good

Scott County, Tennessee · 4 M NE of SR29&63 JCT · Structure no. 760A1460001

Built
1983
42 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
210
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A146 over Branch is a concrete continuous culvert carrying Nfa A146 over Branch in Scott County, Tennessee. It was built in 1983, so it is 42 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 210 vehicles a day, roughly 2% of them trucks, projected to reach 336 by 2041. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa A146
CrossesBranch
Location4 M NE of SR29&63 JCT
RouteCounty Highway 146
Coordinates36.45313, -84.48463
Functional classRural 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating60.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2020)
Projected traffic336 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

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 A146 over Branch built?

It was built in 1983, making it 42 years old in 2025.

What condition is Nfa A146 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 August 2024.

How much traffic does Nfa A146 over Branch carry?

About 210 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A146 over Branch?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 27 ft wide.

Who owns Nfa A146 over Branch?

It is owned by the County Highway Agency.