US Bridges

Nfa A417 over Oostanula Creek

Fair

McMinn County, Tennessee · 1MI East of US11 · Structure no. 540A4170001

Built
1981
44 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A417 over Oostanula Creek is a prestressed concrete box beam or girders - multiple carrying Nfa A417 over Oostanula Creek in McMinn County, Tennessee. It was built in 1981, so it is 44 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 6 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 70 vehicles a day, roughly 2% of them trucks, projected to reach 112 by 2042. The structure is 65 ft (19.8 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A417
CrossesOostanula Creek
Location1MI East of US11
RouteCounty Highway 417
CountyMcMinn County
StateTennessee
Coordinates35.29127, -84.73647
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum 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 - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span63 ft (19.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2020)
Projected traffic112 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 A417 over Oostanula Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Nfa A417 over Oostanula 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 September 2023.

How much traffic does Nfa A417 over Oostanula Creek carry?

About 70 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A417 over Oostanula Creek?

The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 24 ft wide.

Who owns Nfa A417 over Oostanula Creek?

It is owned by the County Highway Agency.