US Bridges

FAP 402 (sr 40) over Rock Creek

Fair

Polk County, Tennessee · 6.3 Mi.West of Ducktown · Structure no. 70SR0400019

Built
1968
57 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
4,005
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 402 (sr 40) over Rock Creek is a concrete continuous culvert carrying FAP 402 (sr 40) over Rock Creek in Polk County, Tennessee. It was built in 1968, so it is 57 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 4,005 vehicles a day, roughly 10% of them trucks, projected to reach 6,408 by 2042. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesFAP 402 (sr 40)
CrossesRock Creek
Location6.3 Mi.West of Ducktown
RouteU.S. Route 64
CountyPolk County
StateTennessee
Coordinates35.06842, -84.46218
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,005 (2021)
Projected traffic6,408 by 2042
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$287,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 402 (sr 40) over Rock Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is FAP 402 (sr 40) over Rock 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 FAP 402 (sr 40) over Rock Creek carry?

About 4,005 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FAP 402 (sr 40) over Rock Creek?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns FAP 402 (sr 40) over Rock Creek?

It is owned by the State Highway Agency.