US Bridges

Wilmington RD over I- 57

Fair

Will County, Illinois · 13.2 M S of US 30 · Structure no. 099016100000000

Built
1967
58 years old, rebuilt 2001
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
4 main spans
Daily traffic
6,300
2023 count
Owner
State
State Highway Agency

About this bridge

Wilmington RD over I- 57 is a steel continuous stringer/multi-beam or girder carrying Wilmington RD over I- 57 in Will County, Illinois. It was built in 1967 and reconstructed in 2001, so it is 58 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 6,300 vehicles a day, roughly 20% of them trucks, projected to reach 8,064 by 2046. The structure is 231 ft (70.3 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesWilmington RD
CrossesI- 57
Location13.2 M S of US 30
CountyWill County
StateIllinois
Coordinates41.32446, -87.82027
Functional classUrban Other Principal 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 inspectionNovember 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 rating98.2 US tons
Inventory rating64.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length231 ft (70.3 m)
Longest span68 ft (20.7 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic8,064 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$186,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wilmington RD over I- 57 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2001.

What condition is Wilmington RD over I- 57 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 November 2024.

How much traffic does Wilmington RD over I- 57 carry?

About 6,300 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Wilmington RD over I- 57?

The structure is 231 ft (70.3 m) long with a longest span of 68 ft (20.7 m) and a deck 35 ft wide.

Who owns Wilmington RD over I- 57?

It is owned by the State Highway Agency.