US Bridges

Nfa A012 over Brandon Spring Branch

Good

Stewart County, Tennessee · Lbl Road 100 · Structure no. 810A0120003

Built
1984
41 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
150
2020 count
Owner
Federal
U.S. Forest Service

About this bridge

Nfa A012 over Brandon Spring Branch is a prestressed concrete stringer/multi-beam or girder carrying Nfa A012 over Brandon Spring Branch in Stewart County, Tennessee. It was built in 1984, so it is 41 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 240 by 2041. The structure is 85 ft (26 m) long and 35 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesNfa A012
CrossesBrandon Spring Branch
LocationLbl Road 100
RouteFederal Lands Road 12
Coordinates36.5502, -87.93028
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length85 ft (26 m)
Longest span80 ft (24.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byState 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 A012 over Brandon Spring Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A012 over Brandon Spring 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 2023.

How much traffic does Nfa A012 over Brandon Spring Branch carry?

About 150 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A012 over Brandon Spring Branch?

The structure is 85 ft (26 m) long with a longest span of 80 ft (24.4 m) and a deck 35 ft wide.

Who owns Nfa A012 over Brandon Spring Branch?

It is owned by the U.S. Forest Service and maintained by the State Highway Agency.