US Bridges

Grass Lake Rd. over W-Way Inlet Bluff Lk

Fair

Lake County, Illinois · 0.7M.W.OF IL-59 · Structure no. 049306100000000

Built
1990
35 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
9,300
2023 count
Owner
County
County Highway Agency

About this bridge

Grass Lake Rd. over W-Way Inlet Bluff Lk is a concrete continuous slab carrying Grass Lake Rd. over W-Way Inlet Bluff Lk in Lake County, Illinois. It was built in 1990, so it is 35 years old, younger 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 9,300 vehicles a day, roughly 6% of them trucks, projected to reach 8,232 by 2046. The structure is 115 ft (34.9 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesGrass Lake Rd.
CrossesW-Way Inlet Bluff Lk
Location0.7M.W.OF IL-59
CountyLake County
StateIllinois
Coordinates42.44801, -88.12515
Functional classUrban 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.
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 inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (34.9 m)
Longest span44 ft (13.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,300 (2023)
Projected traffic8,232 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Grass Lake Rd. over W-Way Inlet Bluff Lk built?

It was built in 1990, making it 35 years old in 2025.

What condition is Grass Lake Rd. over W-Way Inlet Bluff Lk 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 March 2024.

How much traffic does Grass Lake Rd. over W-Way Inlet Bluff Lk carry?

About 9,300 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Grass Lake Rd. over W-Way Inlet Bluff Lk?

The structure is 115 ft (34.9 m) long with a longest span of 44 ft (13.4 m) and a deck 43 ft wide.

Who owns Grass Lake Rd. over W-Way Inlet Bluff Lk?

It is owned by the County Highway Agency.