US Bridges

I40 Ebl & Wbl over Millstone Creek

Fair

Cumberland County, Tennessee · 3 MI from SR1 · Structure no. 18I00400047

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
29,862
2021 count
Owner
State
State Highway Agency

About this bridge

I40 Ebl & Wbl over Millstone Creek is a concrete continuous culvert carrying I40 Ebl & Wbl over Millstone Creek in Cumberland County, Tennessee. It was built in 1966, so it is 59 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 5 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 29,862 vehicles a day, roughly 6% of them trucks, projected to reach 44,947 by 2041. The structure is 23 ft (7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40 Ebl & Wbl
CrossesMillstone Creek
Location3 MI from SR1
RouteInterstate 40
CountyCumberland County
StateTennessee
Coordinates35.89493, -84.79667
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,862 (2021)
Projected traffic44,947 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$370,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I40 Ebl & Wbl over Millstone Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I40 Ebl & Wbl over Millstone 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 October 2023.

How much traffic does I40 Ebl & Wbl over Millstone Creek carry?

About 29,862 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 Ebl & Wbl over Millstone Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns I40 Ebl & Wbl over Millstone Creek?

It is owned by the State Highway Agency.