US Bridges

123rd ST over RR - Metra

Fair

Cook County, Illinois · 1.7 M E US 45 · Structure no. 016056700000000

Built
1943
82 years old, rebuilt 1996
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
187 ft
3 main spans
Daily traffic
6,650
2022 count
Owner
State
State Highway Agency

About this bridge

123rd ST over RR - Metra is a steel continuous stringer/multi-beam or girder carrying 123rd ST over RR - Metra in Cook County, Illinois. It was built in 1943 and reconstructed in 1996, so it is 82 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 6,650 vehicles a day, roughly 4% of them trucks, projected to reach 6,919 by 2046. The structure is 187 ft (57 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries123rd ST
CrossesRR - Metra
Location1.7 M E US 45
CountyCook County
StateIllinois
Coordinates41.66751, -87.82197
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.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length187 ft (57 m)
Longest span71 ft (21.6 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,650 (2022)
Projected traffic6,919 by 2046
Trucks4%
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

OwnerState Highway Agency
Maintained byState 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 123rd ST over RR - Metra built?

It was built in 1943, making it 82 years old in 2025. It was reconstructed in 1996.

What condition is 123rd ST over RR - Metra 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 2025.

How much traffic does 123rd ST over RR - Metra carry?

About 6,650 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is 123rd ST over RR - Metra?

The structure is 187 ft (57 m) long with a longest span of 71 ft (21.6 m) and a deck 56 ft wide.

Who owns 123rd ST over RR - Metra?

It is owned by the State Highway Agency.