US Bridges

Nfa 994 (sa 9422) over Leipers Fork Creek

Fair

Williamson County, Tennessee · 4.2 MI SW JCT SR46&SR96 · Structure no. 94009940001

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
3 main spans
Daily traffic
2,724
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 994 (sa 9422) over Leipers Fork Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa 994 (sa 9422) over Leipers Fork Creek in Williamson County, Tennessee. It was built in 1986, so it is 39 years old, younger 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 6 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 2,724 vehicles a day, roughly 3% of them trucks, projected to reach 3,450 by 2042. The structure is 130 ft (39.6 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 994 (sa 9422)
CrossesLeipers Fork Creek
Location4.2 MI SW JCT SR46&SR96
RouteCounty Highway 994
CountyWilliamson County
StateTennessee
Coordinates35.89705, -86.98599
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span44 ft (13.4 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,724 (2021)
Projected traffic3,450 by 2042
Trucks3%
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 with deck rehabilitation or replacement
Estimated improvement cost$592,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 994 (sa 9422) over Leipers Fork Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa 994 (sa 9422) over Leipers 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 May 2023.

How much traffic does Nfa 994 (sa 9422) over Leipers Fork Creek carry?

About 2,724 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 994 (sa 9422) over Leipers Fork Creek?

The structure is 130 ft (39.6 m) long with a longest span of 44 ft (13.4 m) and a deck 30 ft wide.

Who owns Nfa 994 (sa 9422) over Leipers Fork Creek?

It is owned by the County Highway Agency.