US Bridges

Palatine RD over Il 21 US 45 Milwke

Fair

Cook County, Illinois · 1.2 M W I-294 · Structure no. 016278600000000

Built
2005
20 years old, rebuilt 2006
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
193 ft
2 main spans
Daily traffic
33,800
2022 count
Owner
State
State Highway Agency

About this bridge

Palatine RD over Il 21 US 45 Milwke is a steel continuous stringer/multi-beam or girder carrying Palatine RD over Il 21 US 45 Milwke in Cook County, Illinois. It was built in 2005 and reconstructed in 2006, so it is 20 years old, younger 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 33,800 vehicles a day, roughly 7% of them trucks, projected to reach 43,329 by 2046. The structure is 193 ft (58.7 m) long and 85 ft wide.

Location

Open in Google Maps
CarriesPalatine RD
CrossesIl 21 US 45 Milwke
Location1.2 M W I-294
CountyCook County
StateIllinois
Coordinates42.10839, -87.8899
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating59.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length193 ft (58.7 m)
Longest span95 ft (29 m)
Deck width85 ft (25.9 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,800 (2022)
Projected traffic43,329 by 2046
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Palatine RD over Il 21 US 45 Milwke built?

It was built in 2005, making it 20 years old in 2025. It was reconstructed in 2006.

What condition is Palatine RD over Il 21 US 45 Milwke 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 May 2023.

How much traffic does Palatine RD over Il 21 US 45 Milwke carry?

About 33,800 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Palatine RD over Il 21 US 45 Milwke?

The structure is 193 ft (58.7 m) long with a longest span of 95 ft (29 m) and a deck 85 ft wide.

Who owns Palatine RD over Il 21 US 45 Milwke?

It is owned by the State Highway Agency.