US Bridges

Nfa A601 over Roan Creek

Fair

Johnson County, Tennessee · .3 MI NE of SR 34 · Structure no. 460A6010001

Built
1995
30 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A601 over Roan Creek is a steel stringer/multi-beam or girder carrying Nfa A601 over Roan Creek in Johnson County, Tennessee. It was built in 1995, so it is 30 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 5 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 10 vehicles a day, roughly 1% of them trucks, projected to reach 16 by 2042. The structure is 30 ft (9.2 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A601
CrossesRoan Creek
Location.3 MI NE of SR 34
RouteCounty Highway 602
CountyJohnson County
StateTennessee
Coordinates36.4129, -81.76662
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.2 m)
Longest span29 ft (8.8 m)
Deck width13 ft (4 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic16 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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$161,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A601 over Roan Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nfa A601 over Roan 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 A601 over Roan Creek carry?

About 10 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A601 over Roan Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.8 m) and a deck 13 ft wide.

Who owns Nfa A601 over Roan Creek?

It is owned by the County Highway Agency.