US Bridges

IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp

Fair

St. Clair County, Illinois · Pier P1 to Pier A5 · Structure no. 082014500000000

Built
1969
56 years old, rebuilt 2004
Condition
Fair
inspected September 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
1,559 ft
15 main spans
Daily traffic
4,950
2024 count
Owner
State
State Highway Agency

About this bridge

IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp is a steel continuous girder and floorbeam system carrying IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp in St. Clair County, Illinois. It was built in 1969 and reconstructed in 2004, so it is 56 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 6 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 4,950 vehicles a day, roughly 8% of them trucks, projected to reach 8,787 by 2046. The structure is 1,559 ft (475.2 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIL3NB to 55/64WB "
CrossesUPRR a B C Il 3 SB Ramp
LocationPier P1 to Pier A5
CountySt. Clair County
StateIllinois
Coordinates38.61563, -90.17171
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20 + Mod
Structure length1,559 ft (475.2 m)
Longest span134 ft (40.8 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,950 (2024)
Projected traffic8,787 by 2046
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesFourth level (interchange)
CrossesHighway and railroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2004.

What condition is IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp 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 September 2023.

How much traffic does IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp carry?

About 4,950 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp?

The structure is 1,559 ft (475.2 m) long with a longest span of 134 ft (40.8 m) and a deck 28 ft wide.

Who owns IL3NB to 55/64WB " over UPRR a B C Il 3 SB Ramp?

It is owned by the State Highway Agency.