US Bridges

87th St. over B&o Ihb RR

Fair

Cook County, Illinois · 0.6M.W.OF IL-43 · Structure no. 016324300000000

Built
1971
54 years old, rebuilt 2023
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
206 ft
3 main spans
Daily traffic
19,700
2022 count
Owner
County
County Highway Agency

About this bridge

87th St. over B&o Ihb RR is a steel continuous stringer/multi-beam or girder carrying 87th St. over B&o Ihb RR in Cook County, Illinois. It was built in 1971 and reconstructed in 2023, so it is 54 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 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 19,700 vehicles a day, roughly 4% of them trucks, projected to reach 24,341 by 2046. The structure is 206 ft (62.7 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries87th St.
CrossesB&o Ihb RR
Location0.6M.W.OF IL-43
CountyCook County
StateIllinois
Coordinates41.73342, -87.80879
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length206 ft (62.7 m)
Longest span75 ft (22.9 m)
Deck width68 ft (20.7 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,700 (2022)
Projected traffic24,341 by 2046
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 87th St. over B&o Ihb RR built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2023.

What condition is 87th St. over B&o Ihb RR 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 February 2024.

How much traffic does 87th St. over B&o Ihb RR carry?

About 19,700 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is 87th St. over B&o Ihb RR?

The structure is 206 ft (62.7 m) long with a longest span of 75 ft (22.9 m) and a deck 68 ft wide.

Who owns 87th St. over B&o Ihb RR?

It is owned by the County Highway Agency.