US Bridges

State Line RD over Dutch Gap Canal

Fair

Lake County, Illinois · 1.0 MI W US 45 · Structure no. 049306500000000

Built
1960
65 years old
Condition
Fair
inspected June 2020
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
4,850
2023 count
Owner
Private
Private (other than railroad)

About this bridge

State Line RD over Dutch Gap Canal is a concrete slab carrying State Line RD over Dutch Gap Canal in Lake County, Illinois. It was built in 1960, so it is 65 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 4,850 vehicles a day, roughly 5% of them trucks, projected to reach 6,616 by 2046. The structure is 23 ft (6.9 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesState Line RD
CrossesDutch Gap Canal
Location1.0 MI W US 45
CountyLake County
StateIllinois
Coordinates42.49513, -88.00557
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2020
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,850 (2023)
Projected traffic6,616 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
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 State Line RD over Dutch Gap Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is State Line RD over Dutch Gap Canal 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 June 2020.

How much traffic does State Line RD over Dutch Gap Canal carry?

About 4,850 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is State Line RD over Dutch Gap Canal?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 30 ft wide.

Who owns State Line RD over Dutch Gap Canal?

It is owned by the Private (other than railroad).