US Bridges

Il 100 over Coal Creek

Good

Schuyler County, Illinois · .05M S OLD67 Fredrck · Structure no. 085201800000000

Built
1999
26 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
1,350
2023 count
Owner
State
State Highway Agency

About this bridge

Il 100 over Coal Creek is a concrete continuous culvert carrying Il 100 over Coal Creek in Schuyler 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,350 vehicles a day, roughly 13% of them trucks, projected to reach 1,313 by 2046. The structure is 37 ft (11.2 m) long and 49 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesIl 100
CrossesCoal Creek
Location.05M S OLD67 Fredrck
RouteState Highway 100
Coordinates40.06969, -90.43052
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span11 ft (3.3 m)
Deck width49 ft (14.8 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2023)
Projected traffic1,313 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Il 100 over Coal Creek built?

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

What condition is Il 100 over Coal 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 November 2021.

How much traffic does Il 100 over Coal Creek carry?

About 1,350 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 100 over Coal Creek?

The structure is 37 ft (11.2 m) long with a longest span of 11 ft (3.3 m) and a deck 49 ft wide.

Who owns Il 100 over Coal Creek?

It is owned by the State Highway Agency.