US Bridges

Ill 116 Ashkum Int over I 57

Fair

Iroquois County, Illinois · Ashkum Inter · Structure no. 038012300000000

Built
1967
58 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
4 main spans
Daily traffic
1,800
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 116 Ashkum Int over I 57 is a steel continuous stringer/multi-beam or girder carrying Ill 116 Ashkum Int over I 57 in Iroquois County, Illinois. It was built in 1967, so it is 58 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 1,800 vehicles a day, roughly 14% of them trucks, projected to reach 1,818 by 2046. The structure is 265 ft (80.8 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIll 116 Ashkum Int
CrossesI 57
LocationAshkum Inter
RouteState Highway 116
Coordinates40.88406, -87.96718
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating36.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span80 ft (24.4 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic1,818 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ill 116 Ashkum Int over I 57 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Ill 116 Ashkum Int over I 57 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 January 2024.

How much traffic does Ill 116 Ashkum Int over I 57 carry?

About 1,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Ill 116 Ashkum Int over I 57?

The structure is 265 ft (80.8 m) long with a longest span of 80 ft (24.4 m) and a deck 36 ft wide.

Who owns Ill 116 Ashkum Int over I 57?

It is owned by the State Highway Agency.