US Bridges

FAP 401 348657T over CSX Railroad

Poor

Davidson County, Tennessee · .3 M W JCT SR24&SR255 · Structure no. 19SR0240019

Built
1928
97 years old, rebuilt 1974
Condition
Poor
inspected March 2023
Type
Tee Beam
Concrete Continuous
Length
146 ft
3 main spans
Daily traffic
32,757
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 401 348657T over CSX Railroad is a concrete continuous tee beam carrying FAP 401 348657T over CSX Railroad in Davidson County, Tennessee. It was built in 1928 and reconstructed in 1974, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 32,757 vehicles a day, roughly 7% of them trucks, projected to reach 50,318 by 2041. The structure is 146 ft (44.5 m) long and 62 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFAP 401 348657T
CrossesCSX Railroad
Location.3 M W JCT SR24&SR255
RouteU.S. Route 70
Coordinates36.16908, -86.66925
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length146 ft (44.5 m)
Longest span56 ft (17.1 m)
Deck width62 ft (18.9 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,757 (2021)
Projected traffic50,318 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAP 401 348657T over CSX Railroad built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1974.

What condition is FAP 401 348657T over CSX Railroad in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does FAP 401 348657T over CSX Railroad carry?

About 32,757 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAP 401 348657T over CSX Railroad?

The structure is 146 ft (44.5 m) long with a longest span of 56 ft (17.1 m) and a deck 62 ft wide.

Who owns FAP 401 348657T over CSX Railroad?

It is owned by the State Highway Agency.