US Bridges

US 20 W B over W Channel Rock Riv

Good

Winnebago County, Illinois · .5 MI E of Ill 2 · Structure no. 101019600000000

Built
2015
10 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
408 ft
2 main spans
Daily traffic
32,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 20 W B over W Channel Rock Riv is a steel continuous stringer/multi-beam or girder carrying US 20 W B over W Channel Rock Riv in Winnebago County, Illinois. It was built in 2015, so it is 10 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 32,000 vehicles a day, roughly 12% of them trucks, projected to reach 15,605 by 2046. The structure is 408 ft (124.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 20 W B
CrossesW Channel Rock Riv
Location.5 MI E of Ill 2
RouteU.S. Route 20
CountyWinnebago County
StateIllinois
Coordinates42.21936, -89.099
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating59.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length408 ft (124.3 m)
Longest span200 ft (61 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2023)
Projected traffic15,605 by 2046
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 W B over W Channel Rock Riv built?

It was built in 2015, making it 10 years old in 2025.

What condition is US 20 W B over W Channel Rock Riv 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 November 2023.

How much traffic does US 20 W B over W Channel Rock Riv carry?

About 32,000 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 20 W B over W Channel Rock Riv?

The structure is 408 ft (124.3 m) long with a longest span of 200 ft (61 m) and a deck 45 ft wide.

Who owns US 20 W B over W Channel Rock Riv?

It is owned by the State Highway Agency.