US Bridges

Adams ST over S Br Chicago Riv

Poor

Cook County, Illinois · 200 S & 380 W · Structure no. 016600100000000

Built
1927
98 years old, rebuilt 2017
Condition
Poor
inspected September 2023
Type
Movable - Bascule
Steel
Length
267 ft
1 main span
Daily traffic
6,600
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Adams ST over S Br Chicago Riv is a steel movable - bascule carrying Adams ST over S Br Chicago Riv in Cook County, Illinois. It was built in 1927 and reconstructed in 2017, so it is 98 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 4 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.

It carries about 6,600 vehicles a day, roughly 10% of them trucks, projected to reach 3,687 by 2046. The structure is 267 ft (81.4 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAdams ST
CrossesS Br Chicago Riv
Location200 S & 380 W
CountyCook County
StateIllinois
Coordinates41.87937, -87.63748
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckClosed grating
Main spans1 (+3 approach)
Design loadHS 20
Structure length267 ft (81.4 m)
Longest span199 ft (60.7 m)
Deck width64 ft (19.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2023)
Projected traffic3,687 by 2046
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Adams ST over S Br Chicago Riv built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2017.

What condition is Adams ST over S Br Chicago Riv 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 September 2023.

How much traffic does Adams ST over S Br Chicago Riv carry?

About 6,600 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Adams ST over S Br Chicago Riv?

The structure is 267 ft (81.4 m) long with a longest span of 199 ft (60.7 m) and a deck 64 ft wide.

Who owns Adams ST over S Br Chicago Riv?

It is owned by the City or Municipal Highway Agency.