US Bridges

Nfa A156 over N Fork Bull Run Creek

Good

Union County, Tennessee · S of SR33 at Maynardville · Structure no. 870A1560001

Built
1980
45 years old
Condition
Good
inspected July 2024
Type
Culvert
Steel
Length
20 ft
2 main spans
Daily traffic
210
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A156 over N Fork Bull Run Creek is a steel culvert carrying Nfa A156 over N Fork Bull Run Creek in Union 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 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 210 vehicles a day, roughly 2% of them trucks, projected to reach 336 by 2040. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A156
CrossesN Fork Bull Run Creek
LocationS of SR33 at Maynardville
RouteCity Street 156
CountyUnion County
StateTennessee
Coordinates36.2297, -83.825
Functional classRural 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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2020)
Projected traffic336 by 2040
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 A156 over N Fork Bull Run Creek built?

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

What condition is Nfa A156 over N Fork Bull Run 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 July 2024.

How much traffic does Nfa A156 over N Fork Bull Run Creek carry?

About 210 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A156 over N Fork Bull Run Creek?

The structure is 20 ft (6.1 m) long with a longest span of 8 ft (2.4 m).

Who owns Nfa A156 over N Fork Bull Run Creek?

It is owned by the City or Municipal Highway Agency.