US Bridges

Ch 24 over Langan Creek

Good

Iroquois County, Illinois · .8 MI N.Il 116 · Structure no. 038320400000000

Built
1999
26 years old
Condition
Good
inspected April 2023
Type
Channel Beam
Concrete
Length
80 ft
3 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 24 over Langan Creek is a concrete channel beam carrying Ch 24 over Langan Creek in Iroquois County, Illinois. It was built in 1999, so it is 26 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCh 24
CrossesLangan Creek
Location.8 MI N.Il 116
RouteCounty Highway 0
Coordinates40.89393, -88.03451
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span26 ft (7.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 24 over Langan Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Ch 24 over Langan 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 2023.

How much traffic does Ch 24 over Langan Creek carry?

About 25 vehicles per day (2022 count).

How long is Ch 24 over Langan Creek?

The structure is 80 ft (24.4 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.

Who owns Ch 24 over Langan Creek?

It is owned by the County Highway Agency.