US Bridges

Nfa B708 over Ten Mile Creek

Fair

Knox County, Tennessee · S of US70-E of SR162 · Structure no. 470B7080001

Built
1945
80 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
2,330
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B708 over Ten Mile Creek is a concrete tee beam carrying Nfa B708 over Ten Mile Creek in Knox County, Tennessee. It was built in 1945, so it is 80 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 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 2,330 vehicles a day, roughly 2% of them trucks, projected to reach 3,728 by 2040. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa B708
CrossesTen Mile Creek
LocationS of US70-E of SR162
RouteCounty Highway 708
Coordinates35.90597, -84.07459
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.2 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,330 (2020)
Projected traffic3,728 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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$229,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B708 over Ten Mile Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is Nfa B708 over Ten Mile 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 April 2024.

How much traffic does Nfa B708 over Ten Mile Creek carry?

About 2,330 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B708 over Ten Mile Creek?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Nfa B708 over Ten Mile Creek?

It is owned by the County Highway Agency.