Ill 15 & 4 over Kaskaskia River

Poor Condition80 years old3,600 vehicles/day

Location

StateIllinois
CountySt. Clair
Location0.2 M E Jct Ill 4
CarriesIll 15 & 4
CrossesKaskaskia River
Coordinates38.37721, -89.79196

Condition Ratings

Overall ConditionPoor
Deck5 (Fair)
Superstructure4 (Poor)
Substructure7 (Good)
Channel/Waterway5 (Fair)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length912.4 ft (278.1 m)
Max Span200.5 ft (61.1 m)
Deck Width34.1 ft (10.4 m)
Deck Area2892.2 sq m
Main Spans1
Year Built1946 (reconstructed 2013)

Traffic

Avg Daily Traffic3,600 (2023)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last Inspection324
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number082007700000000

Nearby Bridges