US Bridges

I-90 WB over Coon Creek

Good

McHenry County, Illinois · 0.5 MI E Anthony RD · Structure no. 056990600000000

Built
2013
12 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
1 main span
Daily traffic
29,350
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 WB over Coon Creek is a steel stringer/multi-beam or girder carrying I-90 WB over Coon Creek in McHenry County, Illinois. It was built in 2013, so it is 12 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 29,350 vehicles a day, roughly 21% of them trucks, projected to reach 27,960 by 2046. The structure is 143 ft (43.7 m) long and 69 ft wide.

Location

Open in Google Maps
CarriesI-90 WB
CrossesCoon Creek
Location0.5 MI E Anthony RD
RouteInterstate 90
CountyMcHenry County
StateIllinois
Coordinates42.18538, -88.64021
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating56.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length143 ft (43.7 m)
Longest span140 ft (42.7 m)
Deck width69 ft (21 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,350 (2023)
Projected traffic27,960 by 2046
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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-90 WB over Coon Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is I-90 WB over Coon Creek 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 August 2024.

How much traffic does I-90 WB over Coon Creek carry?

About 29,350 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is I-90 WB over Coon Creek?

The structure is 143 ft (43.7 m) long with a longest span of 140 ft (42.7 m) and a deck 69 ft wide.

Who owns I-90 WB over Coon Creek?

It is owned by the State Toll Authority.