US Bridges

Nfa A866 over Branch

Fair

Obion County, Tennessee · 2.3 MI SE JCT SR3&SR21 · Structure no. 660A2810001

Built
1900
125 years old, rebuilt 1960
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
34 ft
2 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A866 over Branch is a concrete channel beam carrying Nfa A866 over Branch in Obion County, Tennessee. It was built in 1900 and reconstructed in 1960, so it is 125 years old, older 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 4% of them trucks, projected to reach 32 by 2042. The structure is 34 ft (10.4 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A866
CrossesBranch
Location2.3 MI SE JCT SR3&SR21
RouteCounty Highway 866
CountyObion County
StateTennessee
Coordinates36.43408, -89.00606
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length34 ft (10.4 m)
Longest span17 ft (5.2 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$127,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A866 over Branch built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1960.

What condition is Nfa A866 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 March 2023.

How much traffic does Nfa A866 over Branch carry?

About 20 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A866 over Branch?

The structure is 34 ft (10.4 m) long with a longest span of 17 ft (5.2 m) and a deck 18 ft wide.

Who owns Nfa A866 over Branch?

It is owned by the County Highway Agency.