I-270 EB & WB over Chain Of Rocks Canal

Good Condition12 years old46,200 vehicles/day

Location

StateIllinois
CountyMadison
Location2 Mi E Mississippi R
CarriesI-270 EB & WB
CrossesChain Of Rocks Canal
Coordinates38.76564, -90.13848

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure7 (Good)
Substructure8 (Very Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1980.6 ft (603.7 m)
Max Span490.2 ft (149.4 m)
Deck Width94.2 ft (28.7 m)
Deck Area17326.2 sq m
Main Spans5
Year Built2014

Traffic

Avg Daily Traffic46,200 (2023)
Truck Traffic20%
Lanes On Bridge4

Inspection & Ownership

Last Inspection624
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number060034500000000

Nearby Bridges

Or-5 Chainofrocksr over Chain Of Rocks Cn & 2 Lr 0.3 mi Poor Fai 270 over Water Main 0.7 mi Good Fai 270 EB over Ill 3 0.8 mi Fair Fai 270 WB over Ill 3 0.8 mi Fair I-270 EB over St. Thomas RD Nsrr 1.2 mi Fair I-270 WB over St. Thomas RD Nsrr 1.2 mi Fair Fai 270 EB over Mississippi River 1.7 mi Good Fai 270 over Mississippi River 1.8 mi Fair Is 270 W over Mississippi Rvr 2.0 mi Good Is 270 E over Mississippi Rvr 2.0 mi Good