US Bridges

Ill 13 WB over Crab Orchard Lake

Fair

Williamson County, Illinois · 1.6 MI E Jackson CO · Structure no. 100006700000000

Built
1939
86 years old, rebuilt 1989
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
123 ft
3 main spans
Daily traffic
23,500
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 13 WB over Crab Orchard Lake is a steel continuous stringer/multi-beam or girder carrying Ill 13 WB over Crab Orchard Lake in Williamson County, Illinois. It was built in 1939 and reconstructed in 1989, so it is 86 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 5 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 23,500 vehicles a day, roughly 5% of them trucks, projected to reach 10,757 by 2046. The structure is 123 ft (37.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIll 13 WB
CrossesCrab Orchard Lake
Location1.6 MI E Jackson CO
RouteState Highway 13
Coordinates37.74497, -89.12234
Functional classUrban Other Principal Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length123 ft (37.6 m)
Longest span47 ft (14.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,500 (2023)
Projected traffic10,757 by 2046
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Ill 13 WB over Crab Orchard Lake built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1989.

What condition is Ill 13 WB over Crab Orchard Lake 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 April 2024.

How much traffic does Ill 13 WB over Crab Orchard Lake carry?

About 23,500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Ill 13 WB over Crab Orchard Lake?

The structure is 123 ft (37.6 m) long with a longest span of 47 ft (14.3 m) and a deck 43 ft wide.

Who owns Ill 13 WB over Crab Orchard Lake?

It is owned by the State Highway Agency.