US Bridges

School St. over Ihb RR

Good

Cook County, Illinois · 0.2 MI S. of 138th S · Structure no. 016786000000000

Built
1984
41 years old
Condition
Good
inspected September 2020
Type
Stringer/Multi-beam or Girder
Steel
Length
96 ft
3 main spans
Daily traffic
3,400
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

School St. over Ihb RR is a steel stringer/multi-beam or girder carrying School St. over Ihb RR in Cook County, Illinois. It was built in 1984, so it is 41 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,400 vehicles a day, roughly 4% of them trucks, projected to reach 3,939 by 2046. The structure is 96 ft (29.3 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSchool St.
CrossesIhb RR
Location0.2 MI S. of 138th S
CountyCook County
StateIllinois
Coordinates41.64054, -87.62934
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.5 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span38 ft (11.6 m)
Deck width44 ft (13.3 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic3,939 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was School St. over Ihb RR built?

It was built in 1984, making it 41 years old in 2025.

What condition is School St. over Ihb RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2020.

How much traffic does School St. over Ihb RR carry?

About 3,400 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is School St. over Ihb RR?

The structure is 96 ft (29.3 m) long with a longest span of 38 ft (11.6 m) and a deck 44 ft wide.

Who owns School St. over Ihb RR?

It is owned by the City or Municipal Highway Agency.