US Bridges

Nfa A705 over Third Creek

Good

Knox County, Tennessee · 2.5 M W of SR62 I640 JCT · Structure no. 470A7050001

Built
2018
7 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
21 ft
1 main span
Daily traffic
1,180
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A705 over Third Creek is a concrete continuous culvert carrying Nfa A705 over Third Creek in Knox County, Tennessee. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,180 vehicles a day, roughly 1% of them trucks, projected to reach 1,888 by 2040. The structure is 21 ft (6.4 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNfa A705
CrossesThird Creek
Location2.5 M W of SR62 I640 JCT
RouteCity Street 705
Coordinates35.97975, -84.01755
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans1
Design loadHL 93
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,180 (2020)
Projected traffic1,888 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$64,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A705 over Third Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Nfa A705 over Third 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 April 2024.

How much traffic does Nfa A705 over Third Creek carry?

About 1,180 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A705 over Third Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Nfa A705 over Third Creek?

It is owned by the City or Municipal Highway Agency.