US Bridges

FAS 21 over Branch

Fair

Obion County, Tennessee · 3 MI E SR3 · Structure no. 66SR0210007

Built
1925
100 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
2,953
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 21 over Branch is a concrete continuous culvert carrying FAS 21 over Branch in Obion County, Tennessee. It was built in 1925, so it is 100 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 2,953 vehicles a day, roughly 5% of them trucks, projected to reach 5,200 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 73.9 mi (119 km).

Location

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CarriesFAS 21
CrossesBranch
Location3 MI E SR3
RouteState Highway 21
CountyObion County
StateTennessee
Coordinates36.33722, -89.18214
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,953 (2021)
Projected traffic5,200 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed73.9 mi (119 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$320,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 21 over Branch built?

It was built in 1925, making it 100 years old in 2025.

What condition is FAS 21 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 FAS 21 over Branch carry?

About 2,953 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 21 over Branch?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns FAS 21 over Branch?

It is owned by the State Highway Agency.