US Bridges

The Hill Ave over I-57

Good

Williamson County, Illinois · 0.47MI E Halfway RD · Structure no. 100009200000000

Built
2008
17 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
370 ft
4 main spans
Daily traffic
3,600
2021 count
Owner
State
State Highway Agency

About this bridge

The Hill Ave over I-57 is a prestressed concrete continuous stringer/multi-beam or girder carrying The Hill Ave over I-57 in Williamson County, Illinois. It was built in 2008, so it is 17 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,600 vehicles a day, roughly 13% of them trucks, projected to reach 3,636 by 2046. The structure is 370 ft (112.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesThe Hill Ave
CrossesI-57
Location0.47MI E Halfway RD
Coordinates37.74478, -88.95775
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length370 ft (112.9 m)
Longest span98 ft (30 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2021)
Projected traffic3,636 by 2046
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was The Hill Ave over I-57 built?

It was built in 2008, making it 17 years old in 2025.

What condition is The Hill Ave over I-57 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does The Hill Ave over I-57 carry?

About 3,600 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is The Hill Ave over I-57?

The structure is 370 ft (112.9 m) long with a longest span of 98 ft (30 m) and a deck 38 ft wide.

Who owns The Hill Ave over I-57?

It is owned by the State Highway Agency.