US Bridges

Nfa A078 over Wilmore Creek

FairPosted for load

Cannon County, Tennessee · 5MI East of SR53 · Structure no. 080A0780001

Built
1920
105 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
34 ft
2 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A078 over Wilmore Creek is a steel continuous stringer/multi-beam or girder carrying Nfa A078 over Wilmore Creek in Cannon County, Tennessee. It was built in 1920, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 4% of them trucks, projected to reach 80 by 2042. The structure is 34 ft (10.3 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A078
CrossesWilmore Creek
Location5MI East of SR53
RouteCounty Highway 78
CountyCannon County
StateTennessee
Coordinates35.89796, -85.99177
Functional classRural Local

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span17 ft (5.1 m)
Deck width18 ft (5.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic80 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 of existing bridge without deck rehabilitation
Estimated improvement cost$127,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A078 over Wilmore Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Nfa A078 over Wilmore 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 April 2023.

How much traffic does Nfa A078 over Wilmore Creek carry?

About 50 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A078 over Wilmore Creek?

The structure is 34 ft (10.3 m) long with a longest span of 17 ft (5.1 m) and a deck 18 ft wide.

Who owns Nfa A078 over Wilmore Creek?

It is owned by the County Highway Agency.