US Bridges

FAS 129 over Thompson Branch

Fair

Marshall County, Tennessee · 5 M E JCT SR11&SR129 · Structure no. 59S42800007

Built
1950
75 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
962
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 129 over Thompson Branch is a concrete continuous culvert carrying FAS 129 over Thompson Branch in Marshall County, Tennessee. It was built in 1950, so it is 75 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 962 vehicles a day, roughly 5% of them trucks, projected to reach 1,040 by 2041. The structure is 24 ft (7.2 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 129
CrossesThompson Branch
Location5 M E JCT SR11&SR129
RouteState Highway 129
CountyMarshall County
StateTennessee
Coordinates35.32709, -86.7722
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.2 m)
Longest span10 ft (3 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic962 (2021)
Projected traffic1,040 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 129 over Thompson Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is FAS 129 over Thompson 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 September 2024.

How much traffic does FAS 129 over Thompson Branch carry?

About 962 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 129 over Thompson Branch?

The structure is 24 ft (7.2 m) long with a longest span of 10 ft (3 m) and a deck 29 ft wide.

Who owns FAS 129 over Thompson Branch?

It is owned by the State Highway Agency.