US Bridges

Ch 2 over Trib Iroquois River

Fair

Iroquois County, Illinois · 2MI W Ill 1 on Ch 2 · Structure no. 038420500000000

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 2 over Trib Iroquois River is a prestressed concrete box beam or girders - multiple carrying Ch 2 over Trib Iroquois River in Iroquois County, Illinois. It was built in 1975, so it is 50 years old, older 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 6 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 250 vehicles a day, roughly 13% of them trucks, projected to reach 505 by 2046. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCh 2
CrossesTrib Iroquois River
Location2MI W Ill 1 on Ch 2
RouteCounty Highway 0
Coordinates40.85971, -87.78226
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic505 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 2 over Trib Iroquois River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ch 2 over Trib Iroquois River 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 September 2023.

How much traffic does Ch 2 over Trib Iroquois River carry?

About 250 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ch 2 over Trib Iroquois River?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.

Who owns Ch 2 over Trib Iroquois River?

It is owned by the County Highway Agency.