US Bridges

I-55/70 EB over Keebler RD

Fair

Madison County, Illinois · 1.5 M W 159 · Structure no. 060001600000000

Built
1959
66 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
111 ft
3 main spans
Daily traffic
23,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-55/70 EB over Keebler RD is a concrete continuous slab carrying I-55/70 EB over Keebler RD in Madison County, Illinois. It was built in 1959, so it is 66 years old, older than the Illinois average of 45.3 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 23,000 vehicles a day, roughly 26% of them trucks, projected to reach 24,503 by 2046. The structure is 111 ft (33.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-55/70 EB
CrossesKeebler RD
Location1.5 M W 159
RouteInterstate 55
CountyMadison County
StateIllinois
Coordinates38.70231, -89.98481
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
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.
Substructure7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length111 ft (33.8 m)
Longest span43 ft (13.1 m)
Deck width44 ft (13.3 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,000 (2023)
Projected traffic24,503 by 2046
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 I-55/70 EB over Keebler RD built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-55/70 EB over Keebler 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 I-55/70 EB over Keebler RD carry?

About 23,000 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I-55/70 EB over Keebler RD?

The structure is 111 ft (33.8 m) long with a longest span of 43 ft (13.1 m) and a deck 44 ft wide.

Who owns I-55/70 EB over Keebler RD?

It is owned by the State Highway Agency.