US Bridges

Nfa A136 (sa 8714) over Flat Creek

Fair

Union County, Tennessee · In Luttrell-E of SR61 · Structure no. 870A1360001

Built
1976
49 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
2 main spans
Daily traffic
180
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A136 (sa 8714) over Flat Creek is a steel stringer/multi-beam or girder carrying Nfa A136 (sa 8714) over Flat Creek in Union County, Tennessee. It was built in 1976, so it is 49 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 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 180 vehicles a day, projected to reach 288 by 2040. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A136 (sa 8714)
CrossesFlat Creek
LocationIn Luttrell-E of SR61
RouteCity Street 136
CountyUnion County
StateTennessee
Coordinates36.20848, -83.74374
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length57 ft (17.4 m)
Longest span28 ft (8.4 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2020)
Projected traffic288 by 2040
Trucks0%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$191,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A136 (sa 8714) over Flat Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Nfa A136 (sa 8714) over Flat 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 July 2024.

How much traffic does Nfa A136 (sa 8714) over Flat Creek carry?

About 180 vehicles per day (2020 count).

How long is Nfa A136 (sa 8714) over Flat Creek?

The structure is 57 ft (17.4 m) long with a longest span of 28 ft (8.4 m) and a deck 22 ft wide.

Who owns Nfa A136 (sa 8714) over Flat Creek?

It is owned by the City or Municipal Highway Agency.