US Bridges

S Dye RD / Ch 33 over I-72 / US 36

Fair

Sangamon County, Illinois · Illiopolis Interchg · Structure no. 084016200000000

Built
1974
51 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
246 ft
2 main spans
Daily traffic
800
2022 count
Owner
State
State Highway Agency

About this bridge

S Dye RD / Ch 33 over I-72 / US 36 is a steel continuous stringer/multi-beam or girder carrying S Dye RD / Ch 33 over I-72 / US 36 in Sangamon County, Illinois. It was built in 1974, so it is 51 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 800 vehicles a day, roughly 8% of them trucks, projected to reach 1,010 by 2046. The structure is 246 ft (75 m) long and 68 ft wide.

Location

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CarriesS Dye RD / Ch 33
CrossesI-72 / US 36
LocationIlliopolis Interchg
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.83637, -89.25462
Functional classRural Major Collector

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 inspectionFebruary 2025
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 rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length246 ft (75 m)
Longest span99 ft (30.3 m)
Deck width68 ft (20.7 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2022)
Projected traffic1,010 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S Dye RD / Ch 33 over I-72 / US 36 built?

It was built in 1974, making it 51 years old in 2025.

What condition is S Dye RD / Ch 33 over I-72 / US 36 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 February 2025.

How much traffic does S Dye RD / Ch 33 over I-72 / US 36 carry?

About 800 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is S Dye RD / Ch 33 over I-72 / US 36?

The structure is 246 ft (75 m) long with a longest span of 99 ft (30.3 m) and a deck 68 ft wide.

Who owns S Dye RD / Ch 33 over I-72 / US 36?

It is owned by the State Highway Agency.