US Bridges

Roberts Road over Stony Creek

Fair

Cook County, Illinois · 0.3 M N 111th P19 · Structure no. 016302100000000

Built
1932
93 years old, rebuilt 1998
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
14,400
2022 count
Owner
County
County Highway Agency

About this bridge

Roberts Road over Stony Creek is a prestressed concrete stringer/multi-beam or girder carrying Roberts Road over Stony Creek in Cook County, Illinois. It was built in 1932 and reconstructed in 1998, so it is 93 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 6 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 14,400 vehicles a day, roughly 3% of them trucks, projected to reach 16,261 by 2046. The structure is 50 ft (15.1 m) long and 69 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRoberts Road
CrossesStony Creek
Location0.3 M N 111th P19
CountyCook County
StateIllinois
Coordinates41.69367, -87.81691
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.1 m)
Longest span45 ft (13.8 m)
Deck width69 ft (21 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,400 (2022)
Projected traffic16,261 by 2046
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Roberts Road over Stony Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1998.

What condition is Roberts Road over Stony Creek 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 June 2023.

How much traffic does Roberts Road over Stony Creek carry?

About 14,400 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Roberts Road over Stony Creek?

The structure is 50 ft (15.1 m) long with a longest span of 45 ft (13.8 m) and a deck 69 ft wide.

Who owns Roberts Road over Stony Creek?

It is owned by the County Highway Agency.