US Bridges

Nfa A501 over Mill Creek

FairPosted for load

Clay County, Tennessee · 4 MI South of Celina · Structure no. 140A5010001

Built
1950
75 years old, rebuilt 2006
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
61 ft
2 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A501 over Mill Creek is a concrete continuous slab carrying Nfa A501 over Mill Creek in Clay County, Tennessee. It was built in 1950 and reconstructed in 2006, so it is 75 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 6 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 20 vehicles a day, roughly 1% of them trucks, projected to reach 32 by 2042. The structure is 61 ft (18.5 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A501
CrossesMill Creek
Location4 MI South of Celina
RouteCounty Highway 501
CountyClay County
StateTennessee
Coordinates36.49771, -85.53159
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating6.4 US tons
Inventory rating5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span23 ft (7 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$616,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A501 over Mill Creek built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2006.

What condition is Nfa A501 over Mill 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 2024.

How much traffic does Nfa A501 over Mill Creek carry?

About 20 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A501 over Mill Creek?

The structure is 61 ft (18.5 m) long with a longest span of 23 ft (7 m) and a deck 12 ft wide.

Who owns Nfa A501 over Mill Creek?

It is owned by the County Highway Agency.