US Bridges

Eagle Lake Road over Rock CR

Fair

Will County, Illinois · 0.50 MI W of IL-50 · Structure no. 099495300000000

Built
1900
125 years old, rebuilt 1987
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
75
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Eagle Lake Road over Rock CR is a prestressed concrete box beam or girders - multiple carrying Eagle Lake Road over Rock CR in Will County, Illinois. It was built in 1900 and reconstructed in 1987, so it is 125 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 6 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 75 vehicles a day, roughly 27% of them trucks, projected to reach 108 by 2046. The structure is 70 ft (21.3 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesEagle Lake Road
CrossesRock CR
Location0.50 MI W of IL-50
CountyWill County
StateIllinois
Coordinates41.3686, -87.77719
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span69 ft (21 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2019)
Projected traffic108 by 2046
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Eagle Lake Road over Rock CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1987.

What condition is Eagle Lake Road over Rock CR 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 2023.

How much traffic does Eagle Lake Road over Rock CR carry?

About 75 vehicles per day (2019 count), of which roughly 27% are trucks.

How long is Eagle Lake Road over Rock CR?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21 m) and a deck 30 ft wide.

Who owns Eagle Lake Road over Rock CR?

It is owned by the Town or Township Highway Agency.