US Bridges

Nfa A066 over Rockhouse Creek

Fair

Cannon County, Tennessee · 1MI North of SR53 · Structure no. 080A0660001

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
180
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A066 over Rockhouse Creek is a concrete continuous culvert carrying Nfa A066 over Rockhouse Creek in Cannon County, Tennessee. It was built in 1986, so it is 39 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 180 vehicles a day, roughly 11% of them trucks, projected to reach 288 by 2041. The structure is 37 ft (11.4 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa A066
CrossesRockhouse Creek
Location1MI North of SR53
RouteCounty Highway 66
CountyCannon County
StateTennessee
Coordinates35.83834, -86.03075
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2020)
Projected traffic288 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 A066 over Rockhouse Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa A066 over Rockhouse 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 A066 over Rockhouse Creek carry?

About 180 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is Nfa A066 over Rockhouse Creek?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns Nfa A066 over Rockhouse Creek?

It is owned by the County Highway Agency.