I-88 EB over Rock River

Fair Condition54 years old6,850 vehicles/day

Location

StateIllinois
CountyWhiteside
Location3 Mi W Rock Falls
CarriesI-88 EB
CrossesRock River
Coordinates41.75646, -89.77335

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway6 (Satisfactory)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length1200.1 ft (365.8 m)
Max Span169.9 ft (51.8 m)
Deck Width42.0 ft (12.8 m)
Deck Area4682.2 sq m
Main Spans8
Year Built1972 (reconstructed 2002)

Traffic

Avg Daily Traffic6,850 (2023)
Truck Traffic36%
Lanes On Bridge2

Inspection & Ownership

Last Inspection323
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number098007900000000

Nearby Bridges

I-88 WB over Rock River 0.0 mi Fair US 30 Spur N B over I-88 0.6 mi Fair US 30 Spur S B over I-88 0.6 mi Fair I-88 WB over Elkhorn Creek 0.6 mi Fair I-88 EB over Elkhorn Creek 0.6 mi Fair I-88 Ramp WB over Elkhorn Creek 0.6 mi Fair Prophetstown Road over Spring Slough 0.8 mi Fair US 30 Spur S B over Elkhorn Creek 0.8 mi Fair US 30 Spur N B over Elkhorn Creek 0.8 mi Fair Prophetstown RD over I-88 0.8 mi Fair