US Bridges

I55 NB over I240 EB Ramp

Fair

Shelby County, Tennessee · .1 MI S of I240 JCT · Structure no. 79I00550035

Built
1958
67 years old, rebuilt 1998
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
129 ft
3 main spans
Daily traffic
131,916
2021 count
Owner
State
State Highway Agency

About this bridge

I55 NB over I240 EB Ramp is a concrete continuous slab carrying I55 NB over I240 EB Ramp in Shelby County, Tennessee. It was built in 1958 and reconstructed in 1998, so it is 67 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 131,916 vehicles a day, roughly 8% of them trucks, projected to reach 211,066 by 2042. The structure is 129 ft (39.2 m) long and 74 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI55 NB
CrossesI240 EB Ramp
Location.1 MI S of I240 JCT
RouteInterstate 55
CountyShelby County
StateTennessee
Coordinates35.06931, -90.02558
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length129 ft (39.2 m)
Longest span55 ft (16.8 m)
Deck width74 ft (22.5 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131,916 (2021)
Projected traffic211,066 by 2042
Trucks8%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$862,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I55 NB over I240 EB Ramp built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1998.

What condition is I55 NB over I240 EB Ramp 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 January 2025.

How much traffic does I55 NB over I240 EB Ramp carry?

About 131,916 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I55 NB over I240 EB Ramp?

The structure is 129 ft (39.2 m) long with a longest span of 55 ft (16.8 m) and a deck 74 ft wide.

Who owns I55 NB over I240 EB Ramp?

It is owned by the State Highway Agency.