US Bridges

Nfa D507 over Woods Creek

Fair

Knox County, Tennessee · Darby Rd-S Off US11W · Structure no. 470D5070001

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Channel Beam
Concrete
Length
29 ft
1 main span
Daily traffic
660
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa D507 over Woods Creek is a concrete channel beam carrying Nfa D507 over Woods Creek in Knox County, Tennessee. It was built in 1965, so it is 60 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 660 vehicles a day, roughly 2% of them trucks, projected to reach 1,056 by 2040. The structure is 29 ft (8.8 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa D507
CrossesWoods Creek
LocationDarby Rd-S Off US11W
RouteCounty Highway 507
CountyKnox County
StateTennessee
Coordinates36.03583, -83.84133
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 inspectionJune 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 typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2020)
Projected traffic1,056 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$137,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa D507 over Woods Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa D507 over Woods 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 June 2024.

How much traffic does Nfa D507 over Woods Creek carry?

About 660 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa D507 over Woods Creek?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.

Who owns Nfa D507 over Woods Creek?

It is owned by the County Highway Agency.