US Bridges

Black RD over I- 55

Fair

Will County, Illinois · 1.0 M N of US 52 · Structure no. 099020900000000

Built
1959
66 years old, rebuilt 1986
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
207 ft
4 main spans
Daily traffic
24,900
2023 count
Owner
State
State Highway Agency

About this bridge

Black RD over I- 55 is a steel continuous stringer/multi-beam or girder carrying Black RD over I- 55 in Will County, Illinois. It was built in 1959 and reconstructed in 1986, so it is 66 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 24,900 vehicles a day, roughly 2% of them trucks, projected to reach 34,992 by 2046. The structure is 207 ft (63.1 m) long and 55 ft wide.

CarriesBlack RD
CrossesI- 55
Location1.0 M N of US 52
Coordinates41.53628, -88.17988
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length207 ft (63.1 m)
Longest span56 ft (17.2 m)
Deck width55 ft (16.9 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,900 (2023)
Projected traffic34,992 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$276,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Black RD over I- 55 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1986.

What condition is Black RD over I- 55 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 December 2024.

How much traffic does Black RD over I- 55 carry?

About 24,900 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Black RD over I- 55?

The structure is 207 ft (63.1 m) long with a longest span of 56 ft (17.2 m) and a deck 55 ft wide.

Who owns Black RD over I- 55?

It is owned by the State Highway Agency.