US Bridges

9th Ave. over Silver Creek

Poor

Cook County, Illinois · 0.2M.S.OF IL-64 · Structure no. 016747500000000

Built
1955
70 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
9,100
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

9th Ave. over Silver Creek is a steel stringer/multi-beam or girder carrying 9th Ave. over Silver Creek in Cook County, Illinois. It was built in 1955, so it is 70 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 9,100 vehicles a day, roughly 2% of them trucks, projected to reach 7,575 by 2046. The structure is 60 ft (18.3 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries9th Ave.
CrossesSilver Creek
Location0.2M.S.OF IL-64
Coordinates41.90524, -87.84482
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating14.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width48 ft (14.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2022)
Projected traffic7,575 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 9th Ave. over Silver Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is 9th Ave. over Silver Creek 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 December 2023.

How much traffic does 9th Ave. over Silver Creek carry?

About 9,100 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 9th Ave. over Silver Creek?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 48 ft wide.

Who owns 9th Ave. over Silver Creek?

It is owned by the City or Municipal Highway Agency.