US Bridges

Nfa A504 over Coal Creek

Fair

Anderson County, Tennessee · In Lake City · Structure no. 010A5040001

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
1,640
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A504 over Coal Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa A504 over Coal Creek in Anderson 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 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 1,640 vehicles a day, roughly 2% of them trucks, projected to reach 2,624 by 2041. The structure is 174 ft (53 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A504
CrossesCoal Creek
LocationIn Lake City
RouteCity Street 504
CountyAnderson County
StateTennessee
Coordinates36.21174, -84.14729
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span58 ft (17.6 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,640 (2020)
Projected traffic2,624 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.4 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A504 over Coal Creek built?

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

What condition is Nfa A504 over Coal 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 June 2023.

How much traffic does Nfa A504 over Coal Creek carry?

About 1,640 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A504 over Coal Creek?

The structure is 174 ft (53 m) long with a longest span of 58 ft (17.6 m) and a deck 35 ft wide.

Who owns Nfa A504 over Coal Creek?

It is owned by the City or Municipal Highway Agency.