US Bridges

I40 Rmp over I40WB-RMP/BLACKSTOCK-RR

Good

Knox County, Tennessee · At I-275 Jct. · Structure no. 47I00400057

Built
1982
43 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
409 ft
5 main spans
Daily traffic
115,780
2021 count
Owner
State
State Highway Agency

About this bridge

I40 Rmp over I40WB-RMP/BLACKSTOCK-RR is a steel continuous stringer/multi-beam or girder carrying I40 Rmp over I40WB-RMP/BLACKSTOCK-RR in Knox County, Tennessee. It was built in 1982, so it is 43 years old, younger 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 115,780 vehicles a day, roughly 6% of them trucks, projected to reach 10,384 by 2041. The structure is 409 ft (124.6 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesI40 Rmp
CrossesI40WB-RMP/BLACKSTOCK-RR
LocationAt I-275 Jct.
RouteInterstate 40
CountyKnox County
StateTennessee
Coordinates35.96982, -83.92834
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length409 ft (124.6 m)
Longest span120 ft (36.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115,780 (2021)
Projected traffic10,384 by 2041
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 Rmp over I40WB-RMP/BLACKSTOCK-RR built?

It was built in 1982, making it 43 years old in 2025.

What condition is I40 Rmp over I40WB-RMP/BLACKSTOCK-RR 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 November 2024.

How much traffic does I40 Rmp over I40WB-RMP/BLACKSTOCK-RR carry?

About 115,780 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 Rmp over I40WB-RMP/BLACKSTOCK-RR?

The structure is 409 ft (124.6 m) long with a longest span of 120 ft (36.6 m) and a deck 32 ft wide.

Who owns I40 Rmp over I40WB-RMP/BLACKSTOCK-RR?

It is owned by the State Highway Agency.