US Bridges

Nfa A008 over Spring Creek

Fair

Polk County, Tennessee · 3.8 MI SE JCT SR30&SR163 · Structure no. 700A0080003

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
45 ft
4 main spans
Daily traffic
60
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A008 over Spring Creek is a concrete continuous culvert carrying Nfa A008 over Spring Creek in Polk County, Tennessee. It was built in 1980, so it is 45 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 96 by 2042. The structure is 45 ft (13.7 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A008
CrossesSpring Creek
Location3.8 MI SE JCT SR30&SR163
RouteCounty Highway 8
CountyPolk County
StateTennessee
Coordinates35.23692, -84.48445
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic96 by 2042
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A008 over Spring Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Nfa A008 over Spring 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 2024.

How much traffic does Nfa A008 over Spring Creek carry?

About 60 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A008 over Spring Creek?

The structure is 45 ft (13.7 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns Nfa A008 over Spring Creek?

It is owned by the County Highway Agency.