US Bridges

Nfa A531 (sa 5414) over Oostanaula Creek

Fair

McMinn County, Tennessee · In Athens Tenn. · Structure no. 540A6260001

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
3,152
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A531 (sa 5414) over Oostanaula Creek is a prestressed concrete box beam or girders - single or spread carrying Nfa A531 (sa 5414) over Oostanaula Creek in McMinn County, Tennessee. It was built in 1970, so it is 55 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 3,152 vehicles a day, roughly 13% of them trucks, projected to reach 5,043 by 2042. The structure is 72 ft (21.9 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A531 (sa 5414)
CrossesOostanaula Creek
LocationIn Athens Tenn.
RouteCity Street 531
CountyMcMinn County
StateTennessee
Coordinates35.44087, -84.59177
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,152 (2021)
Projected traffic5,043 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$311,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A531 (sa 5414) over Oostanaula Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A531 (sa 5414) over Oostanaula 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 2023.

How much traffic does Nfa A531 (sa 5414) over Oostanaula Creek carry?

About 3,152 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Nfa A531 (sa 5414) over Oostanaula Creek?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 36 ft wide.

Who owns Nfa A531 (sa 5414) over Oostanaula Creek?

It is owned by the City or Municipal Highway Agency.