US Bridges

Nfa D959 over Branch

Good

Knox County, Tennessee · Neubert Springs RD · Structure no. 470D9590001

Built
1935
90 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
300
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D959 over Branch is a concrete continuous culvert carrying Nfa D959 over Branch in Knox County, Tennessee. It was built in 1935, so it is 90 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 300 vehicles a day, roughly 2% of them trucks, projected to reach 480 by 2040. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNfa D959
CrossesBranch
LocationNeubert Springs RD
RouteCounty Highway 959
Coordinates35.87925, -83.87454
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 protection7 GoodSome minor problems.
Culvert7 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span11 ft (3.5 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2020)
Projected traffic480 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 D959 over Branch built?

It was built in 1935, making it 90 years old in 2025.

What condition is Nfa D959 over Branch 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 D959 over Branch carry?

About 300 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D959 over Branch?

The structure is 26 ft (7.9 m) long with a longest span of 11 ft (3.5 m) and a deck 28 ft wide.

Who owns Nfa D959 over Branch?

It is owned by the County Highway Agency.