US Bridges

I- 90 94 Dan Ryan over Sanitary Sewer

Fair

Cook County, Illinois · Just North of 39th · Structure no. 016262500000000

Built
1961
64 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
312,400
2024 count
Owner
State
State Highway Agency

About this bridge

I- 90 94 Dan Ryan over Sanitary Sewer is a concrete continuous culvert carrying I- 90 94 Dan Ryan over Sanitary Sewer in Cook County, Illinois. It was built in 1961, so it is 64 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 312,400 vehicles a day, roughly 8% of them trucks, projected to reach 381,208 by 2046. The structure is 30 ft (9.1 m) long.

Location

Open in Google Maps
CarriesI- 90 94 Dan Ryan
CrossesSanitary Sewer
LocationJust North of 39th
RouteInterstate 90
CountyCook County
StateIllinois
Coordinates41.8238, -87.63087
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
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating63.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic312,400 (2024)
Projected traffic381,208 by 2046
Trucks8%
Lanes on structure14
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 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- 90 94 Dan Ryan over Sanitary Sewer built?

It was built in 1961, making it 64 years old in 2025.

What condition is I- 90 94 Dan Ryan over Sanitary Sewer 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 I- 90 94 Dan Ryan over Sanitary Sewer carry?

About 312,400 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is I- 90 94 Dan Ryan over Sanitary Sewer?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m).

Who owns I- 90 94 Dan Ryan over Sanitary Sewer?

It is owned by the State Highway Agency.