US Bridges

CH-42 over Trib to Spring Creek

Good

Iroquois County, Illinois · 3.5 Miles E Gilman · Structure no. 038401200000000

Built
2015
10 years old
Condition
Good
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

CH-42 over Trib to Spring Creek is a steel stringer/multi-beam or girder carrying CH-42 over Trib to Spring Creek in Iroquois 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 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 75 vehicles a day, roughly 44% of them trucks, projected to reach 76 by 2046. The structure is 80 ft (24.5 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCH-42
CrossesTrib to Spring Creek
Location3.5 Miles E Gilman
RouteCounty Highway 0
Coordinates40.7693, -87.92081
Functional classRural Local

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 inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length80 ft (24.5 m)
Longest span76 ft (23.2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic76 by 2046
Trucks44%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was CH-42 over Trib to Spring Creek built?

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

What condition is CH-42 over Trib to Spring 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 April 2021.

How much traffic does CH-42 over Trib to Spring Creek carry?

About 75 vehicles per day (2022 count), of which roughly 44% are trucks.

How long is CH-42 over Trib to Spring Creek?

The structure is 80 ft (24.5 m) long with a longest span of 76 ft (23.2 m) and a deck 30 ft wide.

Who owns CH-42 over Trib to Spring Creek?

It is owned by the County Highway Agency.