US Bridges

18th Street over Rr. Lumber ST & Lot

Poor

Cook County, Illinois · 1800S 300W to 500W · Structure no. 016611700000000

Built
1967
58 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
381 ft
5 main spans
Daily traffic
5,650
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

18th Street over Rr. Lumber ST & Lot is a steel continuous stringer/multi-beam or girder carrying 18th Street over Rr. Lumber ST & Lot in Cook County, Illinois. It was built in 1967, so it is 58 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.

It carries about 5,650 vehicles a day, roughly 6% of them trucks, projected to reach 4,798 by 2046. The structure is 381 ft (116.1 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries18th Street
CrossesRr. Lumber ST & Lot
Location1800S 300W to 500W
CountyCook County
StateIllinois
Coordinates41.85769, -87.63701
Functional classUrban Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length381 ft (116.1 m)
Longest span89 ft (27 m)
Deck width66 ft (20.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,650 (2022)
Projected traffic4,798 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$608,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 18th Street over Rr. Lumber ST & Lot built?

It was built in 1967, making it 58 years old in 2025.

What condition is 18th Street over Rr. Lumber ST & Lot 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 May 2023.

How much traffic does 18th Street over Rr. Lumber ST & Lot carry?

About 5,650 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is 18th Street over Rr. Lumber ST & Lot?

The structure is 381 ft (116.1 m) long with a longest span of 89 ft (27 m) and a deck 66 ft wide.

Who owns 18th Street over Rr. Lumber ST & Lot?

It is owned by the City or Municipal Highway Agency.