US Bridges

I- 55 SB over RR - BNSF

Fair

Will County, Illinois · 5.7 M S of US 6 · Structure no. 099030400000000

Built
1993
32 years old, rebuilt 2019
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
546 ft
4 main spans
Daily traffic
26,450
2024 count
Owner
State
State Highway Agency

About this bridge

I- 55 SB over RR - BNSF is a steel continuous stringer/multi-beam or girder carrying I- 55 SB over RR - BNSF in Will County, Illinois. It was built in 1993 and reconstructed in 2019, 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 26,450 vehicles a day, roughly 6% of them trucks, projected to reach 31,104 by 2046. The structure is 546 ft (166.3 m) long and 43 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesI- 55 SB
CrossesRR - BNSF
Location5.7 M S of US 6
RouteInterstate 55
CountyWill County
StateIllinois
Coordinates41.37396, -88.19232
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
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 geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length546 ft (166.3 m)
Longest span160 ft (48.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,450 (2024)
Projected traffic31,104 by 2046
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed21.7 mi (35 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I- 55 SB over RR - BNSF built?

It was built in 1993, making it 32 years old in 2025. It was reconstructed in 2019.

What condition is I- 55 SB over RR - BNSF 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 February 2023.

How much traffic does I- 55 SB over RR - BNSF carry?

About 26,450 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is I- 55 SB over RR - BNSF?

The structure is 546 ft (166.3 m) long with a longest span of 160 ft (48.8 m) and a deck 43 ft wide.

Who owns I- 55 SB over RR - BNSF?

It is owned by the State Highway Agency.