US Bridges

CH41 (grandridge R over Murray Slough

Good

Grundy County, Illinois · 0.03 MI W of TR 128 · Structure no. 032322100000000

Built
2022
3 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
93 ft
3 main spans
Daily traffic
625
2024 count
Owner
County
County Highway Agency

About this bridge

CH41 (grandridge R over Murray Slough is a prestressed concrete box beam or girders - multiple carrying CH41 (grandridge R over Murray Slough in Grundy County, Illinois. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 625 vehicles a day, roughly 22% of them trucks, projected to reach 1,138 by 2032. The structure is 93 ft (28.3 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCH41 (grandridge R
CrossesMurray Slough
Location0.03 MI W of TR 128
RouteCounty Highway 0
CountyGrundy County
StateIllinois
Coordinates41.24234, -88.37137
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating47.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length93 ft (28.3 m)
Longest span39 ft (12 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2024)
Projected traffic1,138 by 2032
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CH41 (grandridge R over Murray Slough built?

It was built in 2022, making it 3 years old in 2025.

What condition is CH41 (grandridge R over Murray Slough 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 October 2024.

How much traffic does CH41 (grandridge R over Murray Slough carry?

About 625 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is CH41 (grandridge R over Murray Slough?

The structure is 93 ft (28.3 m) long with a longest span of 39 ft (12 m) and a deck 27 ft wide.

Who owns CH41 (grandridge R over Murray Slough?

It is owned by the County Highway Agency.