US Bridges

I55 SB over I-55 SB / Pvt. RD

Fair

Shelby County, Tennessee · 1 MI W of I240 JCT · Structure no. 79I00550046

Built
1963
62 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
3 main spans
Daily traffic
97,284
2021 count
Owner
State
State Highway Agency

About this bridge

I55 SB over I-55 SB / Pvt. RD is a prestressed concrete stringer/multi-beam or girder carrying I55 SB over I-55 SB / Pvt. RD in Shelby County, Tennessee. It was built in 1963, so it is 62 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 97,284 vehicles a day, roughly 8% of them trucks, projected to reach 116,808 by 2042. The structure is 101 ft (30.9 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI55 SB
CrossesI-55 SB / Pvt. RD
Location1 MI W of I240 JCT
RouteInterstate 55
CountyShelby County
StateTennessee
Coordinates35.07614, -90.04252
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.
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 inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length101 ft (30.9 m)
Longest span40 ft (12.1 m)
Deck width55 ft (16.7 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97,284 (2021)
Projected traffic116,808 by 2042
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$266,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I55 SB over I-55 SB / Pvt. RD built?

It was built in 1963, making it 62 years old in 2025.

What condition is I55 SB over I-55 SB / Pvt. RD 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 December 2024.

How much traffic does I55 SB over I-55 SB / Pvt. RD carry?

About 97,284 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I55 SB over I-55 SB / Pvt. RD?

The structure is 101 ft (30.9 m) long with a longest span of 40 ft (12.1 m) and a deck 55 ft wide.

Who owns I55 SB over I-55 SB / Pvt. RD?

It is owned by the State Highway Agency.