US Bridges

Clear Lake/ I-72(W over I-55

Fair

Sangamon County, Illinois · I-55-CLR Lk - E Spfd · Structure no. 084005100000000

Built
1963
62 years old, rebuilt 1993
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
273 ft
4 main spans
Daily traffic
16,300
2022 count
Owner
State
State Highway Agency

About this bridge

Clear Lake/ I-72(W over I-55 is a steel continuous stringer/multi-beam or girder carrying Clear Lake/ I-72(W over I-55 in Sangamon County, Illinois. It was built in 1963 and reconstructed in 1993, so it is 62 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 16,300 vehicles a day, roughly 8% of them trucks, projected to reach 7,828 by 2046. The structure is 273 ft (83.2 m) long and 52 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesClear Lake/ I-72(W
CrossesI-55
LocationI-55-CLR Lk - E Spfd
CountySangamon County
StateIllinois
Coordinates39.80178, -89.59575
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating63.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length273 ft (83.2 m)
Longest span87 ft (26.5 m)
Deck width52 ft (16 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,300 (2022)
Projected traffic7,828 by 2046
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.8 mi (11 km)
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 Clear Lake/ I-72(W over I-55 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1993.

What condition is Clear Lake/ I-72(W 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 June 2023.

How much traffic does Clear Lake/ I-72(W over I-55 carry?

About 16,300 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Clear Lake/ I-72(W over I-55?

The structure is 273 ft (83.2 m) long with a longest span of 87 ft (26.5 m) and a deck 52 ft wide.

Who owns Clear Lake/ I-72(W over I-55?

It is owned by the State Highway Agency.