US Bridges

FAU 171 349231B over CSX Railroad

Poor

Davidson County, Tennessee · 1.07 M.Ne.Of ST.RT.1 · Structure no. 19SR1710001

Built
1967
58 years old
Condition
Poor
inspected April 2023
Type
Tee Beam
Concrete
Length
108 ft
3 main spans
Daily traffic
23,312
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 171 349231B over CSX Railroad is a concrete tee beam carrying FAU 171 349231B over CSX Railroad in Davidson County, Tennessee. It was built in 1967, so it is 58 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 23,312 vehicles a day, roughly 7% of them trucks, projected to reach 37,299 by 2042. The structure is 108 ft (32.9 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesFAU 171 349231B
CrossesCSX Railroad
Location1.07 M.Ne.Of ST.RT.1
RouteState Highway 171
CountyDavidson County
StateTennessee
Coordinates36.02825, -86.61414
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length108 ft (32.9 m)
Longest span34 ft (10.4 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,312 (2021)
Projected traffic37,299 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.9 mi (24 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$442,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 171 349231B over CSX Railroad built?

It was built in 1967, making it 58 years old in 2025.

What condition is FAU 171 349231B 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 April 2023.

How much traffic does FAU 171 349231B over CSX Railroad carry?

About 23,312 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is FAU 171 349231B over CSX Railroad?

The structure is 108 ft (32.9 m) long with a longest span of 34 ft (10.4 m) and a deck 34 ft wide.

Who owns FAU 171 349231B over CSX Railroad?

It is owned by the State Highway Agency.