US Bridges

US 45-52 over Langan CR

Poor

Iroquois County, Illinois · 5.15 MI N of US 52-IL 49 · Structure no. 038011500000000

Built
1952
73 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
2 main spans
Daily traffic
3,650
2023 count
Owner
State
State Highway Agency

About this bridge

US 45-52 over Langan CR is a steel continuous stringer/multi-beam or girder carrying US 45-52 over Langan CR in Iroquois County, Illinois. It was built in 1952, so it is 73 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,650 vehicles a day, roughly 16% of them trucks, projected to reach 3,990 by 2046. The structure is 134 ft (40.8 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 45-52
CrossesLangan CR
Location5.15 MI N of US 52-IL 49
RouteU.S. Route 45
CountyIroquois County
StateIllinois
Coordinates40.96206, -87.86699
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span64 ft (19.5 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,650 (2023)
Projected traffic3,990 by 2046
Trucks16%
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

OwnerState Highway Agency
Maintained byState 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 US 45-52 over Langan CR built?

It was built in 1952, making it 73 years old in 2025.

What condition is US 45-52 over Langan CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does US 45-52 over Langan CR carry?

About 3,650 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 45-52 over Langan CR?

The structure is 134 ft (40.8 m) long with a longest span of 64 ft (19.5 m) and a deck 32 ft wide.

Who owns US 45-52 over Langan CR?

It is owned by the State Highway Agency.