US Bridges

Nfa A612 (sa 5907) over Troy Fork Creek

Fair

Marshall County, Tennessee · 1.9 MI NW JCT SR129&SR272 · Structure no. 59S43180001

Built
1930
95 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
510
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A612 (sa 5907) over Troy Fork Creek is a concrete tee beam carrying Nfa A612 (sa 5907) over Troy Fork Creek in Marshall County, Tennessee. It was built in 1930, so it is 95 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.

It carries about 510 vehicles a day, roughly 1% of them trucks, projected to reach 816 by 2041. The structure is 34 ft (10.3 m) long and 21 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A612 (sa 5907)
CrossesTroy Fork Creek
Location1.9 MI NW JCT SR129&SR272
RouteCounty Highway 612
CountyMarshall County
StateTennessee
Coordinates35.3428, -86.79192
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (2020)
Projected traffic816 by 2041
Trucks1%
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

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$161,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A612 (sa 5907) over Troy Fork Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Nfa A612 (sa 5907) over Troy Fork Creek 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 July 2024.

How much traffic does Nfa A612 (sa 5907) over Troy Fork Creek carry?

About 510 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A612 (sa 5907) over Troy Fork Creek?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 21 ft wide.

Who owns Nfa A612 (sa 5907) over Troy Fork Creek?

It is owned by the County Highway Agency.