US Bridges

US 30 (lincoln HWY over Thorn Creek

Fair

Cook County, Illinois · 0.2 M W of Il 1 · Structure no. 016253700000000

Built
1986
39 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
64 ft
3 main spans
Daily traffic
22,200
2023 count
Owner
State
State Highway Agency

About this bridge

US 30 (lincoln HWY over Thorn Creek is a concrete continuous slab carrying US 30 (lincoln HWY over Thorn Creek in Cook County, Illinois. It was built in 1986, so it is 39 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 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 22,200 vehicles a day, roughly 5% of them trucks, projected to reach 22,523 by 2046. The structure is 64 ft (19.6 m) long and 67 ft wide.

Location

Open in Google Maps
CarriesUS 30 (lincoln HWY
CrossesThorn Creek
Location0.2 M W of Il 1
RouteU.S. Route 30
CountyCook County
StateIllinois
Coordinates41.50608, -87.64454
Functional classUrban Other Principal 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
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating52.9 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length64 ft (19.6 m)
Longest span24 ft (7.3 m)
Deck width67 ft (20.4 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,200 (2023)
Projected traffic22,523 by 2046
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US 30 (lincoln HWY over Thorn Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is US 30 (lincoln HWY over Thorn Creek 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 July 2023.

How much traffic does US 30 (lincoln HWY over Thorn Creek carry?

About 22,200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 30 (lincoln HWY over Thorn Creek?

The structure is 64 ft (19.6 m) long with a longest span of 24 ft (7.3 m) and a deck 67 ft wide.

Who owns US 30 (lincoln HWY over Thorn Creek?

It is owned by the State Highway Agency.