US Bridges

Ridgeland Ave over Cal Sag Channel

Fair

Cook County, Illinois · 0.6 M S 115th P26 · Structure no. 016302500000000

Built
1967
58 years old, rebuilt 2014
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
433 ft
1 main span
Daily traffic
24,300
2022 count
Owner
County
County Highway Agency

About this bridge

Ridgeland Ave over Cal Sag Channel is a steel truss - thru carrying Ridgeland Ave over Cal Sag Channel in Cook County, Illinois. It was built in 1967 and reconstructed in 2014, so it is 58 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 24,300 vehicles a day, roughly 3% of them trucks, projected to reach 29,189 by 2046. The structure is 433 ft (132.1 m) long and 74 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRidgeland Ave
CrossesCal Sag Channel
Location0.6 M S 115th P26
CountyCook County
StateIllinois
Coordinates41.67469, -87.77819
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating36.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length433 ft (132.1 m)
Longest span302 ft (92 m)
Deck width74 ft (22.6 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,300 (2022)
Projected traffic29,189 by 2046
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.3 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Ridgeland Ave over Cal Sag Channel built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2014.

What condition is Ridgeland Ave over Cal Sag Channel 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 March 2023.

How much traffic does Ridgeland Ave over Cal Sag Channel carry?

About 24,300 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Ridgeland Ave over Cal Sag Channel?

The structure is 433 ft (132.1 m) long with a longest span of 302 ft (92 m) and a deck 74 ft wide.

Who owns Ridgeland Ave over Cal Sag Channel?

It is owned by the County Highway Agency.