US Bridges

FAP 431 297345S over Ic Railroad

Fair

Obion County, Tennessee · In Union City · Structure no. 66SR0220003

Built
1928
97 years old, rebuilt 1964
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
139 ft
1 main span
Daily traffic
8,967
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 431 297345S over Ic Railroad is a prestressed concrete box beam or girders - multiple carrying FAP 431 297345S over Ic Railroad in Obion County, Tennessee. It was built in 1928 and reconstructed in 1964, so it is 97 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 8,967 vehicles a day, roughly 9% of them trucks, projected to reach 13,514 by 2041. The structure is 139 ft (42.4 m) long and 77 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

Location

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CarriesFAP 431 297345S
CrossesIc Railroad
LocationIn Union City
RouteState Highway 431
CountyObion County
StateTennessee
Coordinates36.40675, -89.00556
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span67 ft (20.4 m)
Deck width77 ft (23.5 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,967 (2021)
Projected traffic13,514 by 2041
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed37.3 mi (60 km)
TollOn a free road
National Highway SystemYes

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$290,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAP 431 297345S over Ic Railroad built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1964.

What condition is FAP 431 297345S over Ic Railroad 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 FAP 431 297345S over Ic Railroad carry?

About 8,967 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 431 297345S over Ic Railroad?

The structure is 139 ft (42.4 m) long with a longest span of 67 ft (20.4 m) and a deck 77 ft wide.

Who owns FAP 431 297345S over Ic Railroad?

It is owned by the State Highway Agency.