US Bridges

Nfa B156 over Branch

Fair

Anderson County, Tennessee · Raccoon RD in Oak Ridge · Structure no. 010B1560001

Built
1980
45 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Concrete
Length
24 ft
1 main span
Daily traffic
3,322
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B156 over Branch is a concrete channel beam carrying Nfa B156 over Branch in Anderson County, Tennessee. It was built in 1980, so it is 45 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 3,322 vehicles a day, roughly 3% of them trucks, projected to reach 5,315 by 2042. The structure is 24 ft (7.3 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa B156
CrossesBranch
LocationRaccoon RD in Oak Ridge
RouteCity Street 4368
CountyAnderson County
StateTennessee
Coordinates36.01087, -84.26518
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,322 (2021)
Projected traffic5,315 by 2042
Trucks3%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$98,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B156 over Branch built?

It was built in 1980, making it 45 years old in 2025.

What condition is Nfa B156 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 June 2023.

How much traffic does Nfa B156 over Branch carry?

About 3,322 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa B156 over Branch?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 34 ft wide.

Who owns Nfa B156 over Branch?

It is owned by the City or Municipal Highway Agency.