US Bridges

I55 NB over I-55 N.B. / I-240

Fair

Shelby County, Tennessee · I-240 over I-55 Jct. · Structure no. 79I00550037

Built
1958
67 years old, rebuilt 1998
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
232 ft
2 main spans
Daily traffic
131,916
2021 count
Owner
State
State Highway Agency

About this bridge

I55 NB over I-55 N.B. / I-240 is a prestressed concrete continuous box beam or girders - multiple carrying I55 NB over I-55 N.B. / I-240 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 232 ft (70.7 m) long and 82 ft wide.

Location

Open in Google Maps
CarriesI55 NB
CrossesI-55 N.B. / I-240
LocationI-240 over I-55 Jct.
RouteInterstate 55
CountyShelby County
StateTennessee
Coordinates35.07134, -90.02561
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span80 ft (24.4 m)
Deck width82 ft (25 m)
Roadway width78 ft (23.9 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 closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I55 NB over I-55 N.B. / I-240 built?

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

What condition is I55 NB over I-55 N.B. / I-240 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 I-55 N.B. / I-240 carry?

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

How long is I55 NB over I-55 N.B. / I-240?

The structure is 232 ft (70.7 m) long with a longest span of 80 ft (24.4 m) and a deck 82 ft wide.

Who owns I55 NB over I-55 N.B. / I-240?

It is owned by the State Highway Agency.