US Bridges

FAS 246 over West Harpeth River

Fair

Williamson County, Tennessee · 8.2 M N Maury CO Line · Structure no. 94S62490003

Built
1963
62 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
4,861
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 246 over West Harpeth River is a prestressed concrete continuous stringer/multi-beam or girder carrying FAS 246 over West Harpeth River in Williamson County, Tennessee. It was built in 1963, so it is 62 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 4,861 vehicles a day, roughly 2% of them trucks, projected to reach 8,528 by 2041. The structure is 110 ft (33.5 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 246
CrossesWest Harpeth River
Location8.2 M N Maury CO Line
RouteState Highway 246
CountyWilliamson County
StateTennessee
Coordinates35.87643, -86.94209
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span37 ft (11.3 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,861 (2021)
Projected traffic8,528 by 2041
Trucks2%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 246 over West Harpeth River built?

It was built in 1963, making it 62 years old in 2025.

What condition is FAS 246 over West Harpeth River 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 November 2024.

How much traffic does FAS 246 over West Harpeth River carry?

About 4,861 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is FAS 246 over West Harpeth River?

The structure is 110 ft (33.5 m) long with a longest span of 37 ft (11.3 m) and a deck 34 ft wide.

Who owns FAS 246 over West Harpeth River?

It is owned by the State Highway Agency.