US Bridges

I81 over Ramp to I40 Rt LN Only

Fair

Jefferson County, Tennessee · 7.18MI from Hamblen CO LN · Structure no. 45I00810019

Built
1960
65 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
267 ft
3 main spans
Daily traffic
48,169
2021 count
Owner
State
State Highway Agency

About this bridge

I81 over Ramp to I40 Rt LN Only is a concrete continuous tee beam carrying I81 over Ramp to I40 Rt LN Only in Jefferson County, Tennessee. It was built in 1960, so it is 65 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 48,169 vehicles a day, roughly 6% of them trucks, projected to reach 77,070 by 2042. The structure is 267 ft (81.5 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesI81
CrossesRamp to I40 Rt LN Only
Location7.18MI from Hamblen CO LN
RouteInterstate 81
CountyJefferson County
StateTennessee
Coordinates36.06893, -83.38412
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length267 ft (81.5 m)
Longest span108 ft (32.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,169 (2021)
Projected traffic77,070 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.9 mi (32 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$2.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I81 over Ramp to I40 Rt LN Only built?

It was built in 1960, making it 65 years old in 2025.

What condition is I81 over Ramp to I40 Rt LN Only 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 I81 over Ramp to I40 Rt LN Only carry?

About 48,169 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I81 over Ramp to I40 Rt LN Only?

The structure is 267 ft (81.5 m) long with a longest span of 108 ft (32.8 m) and a deck 43 ft wide.

Who owns I81 over Ramp to I40 Rt LN Only?

It is owned by the State Highway Agency.