US Bridges

Il 203 over Drng to Cahokia Cnl

Fair

St. Clair County, Illinois · 0.1 M N Old US 40 · Structure no. 082002900000000

Built
1960
65 years old, rebuilt 1993
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
92 ft
3 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 203 over Drng to Cahokia Cnl is a steel continuous stringer/multi-beam or girder carrying Il 203 over Drng to Cahokia Cnl in St. Clair County, Illinois. It was built in 1960 and reconstructed in 1993, so it is 65 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 3,500 vehicles a day, roughly 16% of them trucks, projected to reach 4,040 by 2046. The structure is 92 ft (28 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIl 203
CrossesDrng to Cahokia Cnl
Location0.1 M N Old US 40
RouteState Highway 203
CountySt. Clair County
StateIllinois
Coordinates38.64275, -90.12723
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span32 ft (9.8 m)
Deck width66 ft (20.1 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic4,040 by 2046
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 203 over Drng to Cahokia Cnl built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1993.

What condition is Il 203 over Drng to Cahokia Cnl 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 2024.

How much traffic does Il 203 over Drng to Cahokia Cnl carry?

About 3,500 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Il 203 over Drng to Cahokia Cnl?

The structure is 92 ft (28 m) long with a longest span of 32 ft (9.8 m) and a deck 66 ft wide.

Who owns Il 203 over Drng to Cahokia Cnl?

It is owned by the State Highway Agency.