US Bridges

255NB Ramp E to Il over Il 163

Fair

St. Clair County, Illinois · 0.2MI S of Il 15 · Structure no. 082026200000000

Built
1980
45 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
1 main span
Daily traffic
5,900
2024 count
Owner
State
State Highway Agency

About this bridge

255NB Ramp E to Il over Il 163 is a steel stringer/multi-beam or girder carrying 255NB Ramp E to Il over Il 163 in St. Clair County, Illinois. It was built in 1980, so it is 45 years old, younger 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 5,900 vehicles a day, roughly 7% of them trucks, projected to reach 6,565 by 2046. The structure is 117 ft (35.8 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries255NB Ramp E to Il
CrossesIl 163
Location0.2MI S of Il 15
CountySt. Clair County
StateIllinois
Coordinates38.58038, -90.10996
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating64.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length117 ft (35.8 m)
Longest span115 ft (35.1 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2024)
Projected traffic6,565 by 2046
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 255NB Ramp E to Il over Il 163 built?

It was built in 1980, making it 45 years old in 2025.

What condition is 255NB Ramp E to Il over Il 163 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 255NB Ramp E to Il over Il 163 carry?

About 5,900 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is 255NB Ramp E to Il over Il 163?

The structure is 117 ft (35.8 m) long with a longest span of 115 ft (35.1 m) and a deck 29 ft wide.

Who owns 255NB Ramp E to Il over Il 163?

It is owned by the State Highway Agency.