US Bridges

Nfa D917 over Stock Creek

Fair

Knox County, Tennessee · Tipton Sta. Rd-S of SR168 · Structure no. 470D9170001

Built
1915
110 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
710
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D917 over Stock Creek is a concrete culvert carrying Nfa D917 over Stock Creek in Knox County, Tennessee. It was built in 1915, so it is 110 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 710 vehicles a day, roughly 2% of them trucks, projected to reach 1,136 by 2040. The structure is 29 ft (8.8 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa D917
CrossesStock Creek
LocationTipton Sta. Rd-S of SR168
RouteCounty Highway 917
CountyKnox County
StateTennessee
Coordinates35.89122, -83.84338
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic710 (2020)
Projected traffic1,136 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 with deck rehabilitation or replacement
Estimated improvement cost$182,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa D917 over Stock Creek built?

It was built in 1915, making it 110 years old in 2025.

What condition is Nfa D917 over Stock 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 D917 over Stock Creek carry?

About 710 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D917 over Stock Creek?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m) and a deck 16 ft wide.

Who owns Nfa D917 over Stock Creek?

It is owned by the County Highway Agency.