Structure 22301800000000 · DuPage County, IL

York RD over Land Bridge

Carries York RD over Land Bridge, 0.57 Mi N Thorndale.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,213 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

1,213 ft end to end, longest span 30 ft: about 3.4 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built199630 years old
Length1212.6 ft369.6 m
Daily traffic21,600counted 2024
Last inspectedFebruary 2025every 24 months

Location

StateIllinois
CountyDuPage
Location0.57 Mi N Thorndale
CarriesYork RD
CrossesLand Bridge
Coordinates41.98394, -87.93979

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length1212.6 ft (369.6 m)
Max Span29.9 ft (9.1 m)
Deck Width78.1 ft (23.8 m)
Deck Area8796.5 sq m
Main Spans44
Year Built1996

Traffic

Avg Daily Traffic21,600 (2024)
Truck Traffic18%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure Number022301800000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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