US Bridges

I-255 NB over Csxrr Csxrr Black Lane

Good

St. Clair County, Illinois · 1.2 MI S of I-55/70 · Structure no. 082024800000000

Built
1985
40 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,214 ft
18 main spans
Daily traffic
21,750
2023 count
Owner
State
State Highway Agency

About this bridge

I-255 NB over Csxrr Csxrr Black Lane is a steel continuous stringer/multi-beam or girder carrying I-255 NB over Csxrr Csxrr Black Lane in St. Clair County, Illinois. It was built in 1985, so it is 40 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21,750 vehicles a day, roughly 15% of them trucks, projected to reach 21,917 by 2046. The structure is 2,214 ft (674.8 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-255 NB
CrossesCsxrr Csxrr Black Lane
Location1.2 MI S of I-55/70
RouteInterstate 255
CountySt. Clair County
StateIllinois
Coordinates38.64366, -90.04705
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20 + Mod
Structure length2,214 ft (674.8 m)
Longest span132 ft (40.2 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,750 (2023)
Projected traffic21,917 by 2046
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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-255 NB over Csxrr Csxrr Black Lane built?

It was built in 1985, making it 40 years old in 2025.

What condition is I-255 NB over Csxrr Csxrr Black Lane in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does I-255 NB over Csxrr Csxrr Black Lane carry?

About 21,750 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-255 NB over Csxrr Csxrr Black Lane?

The structure is 2,214 ft (674.8 m) long with a longest span of 132 ft (40.2 m) and a deck 59 ft wide.

Who owns I-255 NB over Csxrr Csxrr Black Lane?

It is owned by the State Highway Agency.