US Bridges

I75 over Wilcox Branch

Fair

Knox County, Tennessee · .5 M NW of SR170 · Structure no. 47I00750065

Built
1969
56 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
57,022
2021 count
Owner
State
State Highway Agency

About this bridge

I75 over Wilcox Branch is a concrete continuous culvert carrying I75 over Wilcox Branch in Knox County, Tennessee. It was built in 1969, so it is 56 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 57,022 vehicles a day, roughly 6% of them trucks, projected to reach 71,856 by 2041. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesI75
CrossesWilcox Branch
Location.5 M NW of SR170
RouteInterstate 75
CountyKnox County
StateTennessee
Coordinates36.10063, -84.02148
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,022 (2021)
Projected traffic71,856 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$487,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I75 over Wilcox Branch built?

It was built in 1969, making it 56 years old in 2025.

What condition is I75 over Wilcox Branch 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 November 2024.

How much traffic does I75 over Wilcox Branch carry?

About 57,022 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I75 over Wilcox Branch?

The structure is 31 ft (9.5 m) long with a longest span of 14 ft (4.3 m).

Who owns I75 over Wilcox Branch?

It is owned by the State Highway Agency.