US Bridges

Ill 100 over Drains to Eagle Lake

PoorPosted for load

Jersey County, Illinois · 5.5N Grafton · Structure no. 042200100000000

Built
1938
87 years old
Condition
Poor
inspected November 2024
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
775
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 100 over Drains to Eagle Lake is a concrete continuous culvert carrying Ill 100 over Drains to Eagle Lake in Jersey County, Illinois. It was built in 1938, so it is 87 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. Its operating status is: posted for load restriction.

It carries about 775 vehicles a day, roughly 17% of them trucks, projected to reach 808 by 2046. The structure is 34 ft (10.3 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIll 100
CrossesDrains to Eagle Lake
Location5.5N Grafton
RouteState Highway 100
CountyJersey County
StateIllinois
Coordinates38.99028, -90.54203
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
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating19.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length34 ft (10.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic775 (2023)
Projected traffic808 by 2046
Trucks17%
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 Ill 100 over Drains to Eagle Lake built?

It was built in 1938, making it 87 years old in 2025.

What condition is Ill 100 over Drains to Eagle Lake 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 November 2024.

How much traffic does Ill 100 over Drains to Eagle Lake carry?

About 775 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Ill 100 over Drains to Eagle Lake?

The structure is 34 ft (10.3 m) long with a longest span of 10 ft (3 m).

Who owns Ill 100 over Drains to Eagle Lake?

It is owned by the State Highway Agency.