US Bridges

I- 55 NB over RR - CSXT

Fair

Will County, Illinois · 0.8 M S of I-80 · Structure no. 099031300000000

Built
1993
32 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
203 ft
3 main spans
Daily traffic
34,100
2024 count
Owner
State
State Highway Agency

About this bridge

I- 55 NB over RR - CSXT is a steel continuous stringer/multi-beam or girder carrying I- 55 NB over RR - CSXT in Will County, Illinois. It was built in 1993, so it is 32 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 34,100 vehicles a day, roughly 18% of them trucks, projected to reach 40,680 by 2046. The structure is 203 ft (61.8 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesI- 55 NB
CrossesRR - CSXT
Location0.8 M S of I-80
RouteInterstate 55
CountyWill County
StateIllinois
Coordinates41.47323, -88.19682
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
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.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length203 ft (61.8 m)
Longest span84 ft (25.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,100 (2024)
Projected traffic40,680 by 2046
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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- 55 NB over RR - CSXT built?

It was built in 1993, making it 32 years old in 2025.

What condition is I- 55 NB over RR - CSXT 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 March 2024.

How much traffic does I- 55 NB over RR - CSXT carry?

About 34,100 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I- 55 NB over RR - CSXT?

The structure is 203 ft (61.8 m) long with a longest span of 84 ft (25.6 m) and a deck 43 ft wide.

Who owns I- 55 NB over RR - CSXT?

It is owned by the State Highway Agency.