US Bridges

Nfa A491 over Steele Creek

Good

Sullivan County, Tennessee · 1MI South of SR126 · Structure no. 820A4910001

Built
1996
29 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
47 ft
2 main spans
Daily traffic
420
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A491 over Steele Creek is a concrete continuous culvert carrying Nfa A491 over Steele Creek in Sullivan County, Tennessee. It was built in 1996, so it is 29 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 420 vehicles a day, roughly 2% of them trucks, projected to reach 672 by 2042. The structure is 47 ft (14.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa A491
CrossesSteele Creek
Location1MI South of SR126
RouteCounty Highway 491
Coordinates36.57777, -82.23215
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length47 ft (14.4 m)
Longest span23 ft (7 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2020)
Projected traffic672 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A491 over Steele Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Nfa A491 over Steele Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Nfa A491 over Steele Creek carry?

About 420 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A491 over Steele Creek?

The structure is 47 ft (14.4 m) long with a longest span of 23 ft (7 m) and a deck 31 ft wide.

Who owns Nfa A491 over Steele Creek?

It is owned by the City or Municipal Highway Agency.