US Bridges

FAS 138 over Overflow

FairPosted for load

Madison County, Tennessee · In Mercer · Structure no. 57SR1380011

Built
1949
76 years old, rebuilt 1990
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
85 ft
5 main spans
Daily traffic
866
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 138 over Overflow is a concrete channel beam carrying FAS 138 over Overflow in Madison County, Tennessee. It was built in 1949 and reconstructed in 1990, so it is 76 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 866 vehicles a day, roughly 5% of them trucks, projected to reach 1,386 by 2042. The structure is 85 ft (25.9 m) long and 29 ft wide. If it were closed, the detour would be 64 mi (103 km).

Location

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CarriesFAS 138
CrossesOverflow
LocationIn Mercer
RouteState Highway 138
CountyMadison County
StateTennessee
Coordinates35.48381, -89.04489
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length85 ft (25.9 m)
Longest span17 ft (5.2 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic866 (2021)
Projected traffic1,386 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed64 mi (103 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$583,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 138 over Overflow built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1990.

What condition is FAS 138 over Overflow 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 May 2023.

How much traffic does FAS 138 over Overflow carry?

About 866 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 138 over Overflow?

The structure is 85 ft (25.9 m) long with a longest span of 17 ft (5.2 m) and a deck 29 ft wide.

Who owns FAS 138 over Overflow?

It is owned by the State Highway Agency.