US Bridges

25th Ave over RR - Ihb

Fair

Cook County, Illinois · 0.3 M N Il 64 · Structure no. 016101100000000

Built
1965
60 years old, rebuilt 1994
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,307 ft
16 main spans
Daily traffic
15,900
2023 count
Owner
State
State Highway Agency

About this bridge

25th Ave over RR - Ihb is a steel continuous stringer/multi-beam or girder carrying 25th Ave over RR - Ihb in Cook County, Illinois. It was built in 1965 and reconstructed in 1994, so it is 60 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 5 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 15,900 vehicles a day, roughly 9% of them trucks, projected to reach 18,079 by 2046. The structure is 1,307 ft (398.3 m) long and 62 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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Carries25th Ave
CrossesRR - Ihb
Location0.3 M N Il 64
CountyCook County
StateIllinois
Coordinates41.91404, -87.86459
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans16
Design loadHS 20
Structure length1,307 ft (398.3 m)
Longest span100 ft (30.6 m)
Deck width62 ft (18.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,900 (2023)
Projected traffic18,079 by 2046
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$16.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 25th Ave over RR - Ihb built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1994.

What condition is 25th Ave over RR - Ihb 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 January 2024.

How much traffic does 25th Ave over RR - Ihb carry?

About 15,900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is 25th Ave over RR - Ihb?

The structure is 1,307 ft (398.3 m) long with a longest span of 100 ft (30.6 m) and a deck 62 ft wide.

Who owns 25th Ave over RR - Ihb?

It is owned by the State Highway Agency.