US Bridges

Ch 4 over Branch of Langan Crk

Good

Iroquois County, Illinois · 6 MI E. of Ford Co. · Structure no. 038019500000000

Built
1992
33 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 4 over Branch of Langan Crk is a concrete continuous slab carrying Ch 4 over Branch of Langan Crk in Iroquois County, Illinois. It was built in 1992, so it is 33 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 150 vehicles a day, roughly 37% of them trucks, projected to reach 202 by 2046. The structure is 142 ft (43.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCh 4
CrossesBranch of Langan Crk
Location6 MI E. of Ford Co.
RouteCounty Highway 0
Coordinates40.93378, -88.02708
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length142 ft (43.2 m)
Longest span53 ft (16.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic202 by 2046
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 4 over Branch of Langan Crk built?

It was built in 1992, making it 33 years old in 2025.

What condition is Ch 4 over Branch of Langan Crk 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 September 2021.

How much traffic does Ch 4 over Branch of Langan Crk carry?

About 150 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is Ch 4 over Branch of Langan Crk?

The structure is 142 ft (43.2 m) long with a longest span of 53 ft (16.1 m) and a deck 33 ft wide.

Who owns Ch 4 over Branch of Langan Crk?

It is owned by the County Highway Agency.