US Bridges

18th ST over RR Tracks

Poor

Cook County, Illinois · 1800S.& 300W.TO 200W · Structure no. 016611600000000

Built
1967
58 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
520 ft
7 main spans
Daily traffic
5,650
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

18th ST over RR Tracks is a steel continuous stringer/multi-beam or girder carrying 18th ST over RR Tracks 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 3 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 5,650 vehicles a day, roughly 6% of them trucks, projected to reach 4,798 by 2046. The structure is 520 ft (158.6 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries18th ST
CrossesRR Tracks
Location1800S.& 300W.TO 200W
Coordinates41.85772, -87.63446
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.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length520 ft (158.6 m)
Longest span109 ft (33.3 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
CrossesRailroad
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$737,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 18th ST over RR Tracks built?

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

What condition is 18th ST over RR Tracks 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 June 2024.

How much traffic does 18th ST over RR Tracks carry?

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

How long is 18th ST over RR Tracks?

The structure is 520 ft (158.6 m) long with a longest span of 109 ft (33.3 m) and a deck 66 ft wide.

Who owns 18th ST over RR Tracks?

It is owned by the City or Municipal Highway Agency.