Facility Conditions.

Size: px

Start display at page:

Download "Facility Conditions."

Christopher McLaughlin
5 years ago
Views:

1 Facility Conditions Circle Interchange Under Construction Looking orth, Circa Late 1950s There have been no major improvements made to the Circle Interchange since its construction in the 1950s. Maintenance and repairs have been made to extend the service life of the interchange roadway pavement and ramp bridge decks and structures. Improvements and repairs have been made to several of the cross street bridges over I-/ (Kennedy and Dan Ryan Expressways) as part of major reconstruction projects along both expressways during the mid to late 19s. However, many of the bridge decks are nearing the end of their service life and need replacement. Other past improvements included the following: 1975 I- Resurfacing from Sacramento thru Circle 1985 I-/ Reconstruction, CD Roads and s from Maxwell Street to I I-/ Reconstruction, orthbound Mainline from 28th Place to Maxwell Street 1988 I- Resurfacing from Central to Circle The aging condition of the facility substantiates the need to address the condition of the Circle Interchange to better serve the motoring public now and into the future.

2 Mobility Issues Identified Mainline Kennedy & Dan Ryan Expressways east to north > UMBER OF LAES north to west

3 LOCATIO: EB 1- VEHICLE: 3 Passenger Cars TYPE OF COLLISIO: Head-on PRIMARY CAUSE: Wrong Way FATALITIES: Five (From 2/3 Cars) Circle s Eisenhower Expy 208 Crashes 575 Crashes Dan Ryan Expy Kennedy Expy 847 Crashes 1,065 Crashes W S Service s Congress Pkwy E Decision points closely spaced increasing likelihood of rear end and sideswipe collisions LOCATIO: south-west VEHICLE: Motorcycle TYPE OF COLLISIO: Overturned PRIMARY CAUSE: Driving Skills FATALITIES: One Due to curvature, motorist approaching merge may drift from ramp south-west into ramp north-west At Merge, ISP observes speeding drivers on WB I- and ramp south-west, with much slower traffic merging from ramp north-west Potential sight distance issue around curve, increasing likelihood of rear-end collisions Crashes on Circle s 120 Left-handed entrance ramps with short merge areas increases the likelihood of sideswipe collisions Crashes ( ) ISP observes aggressive drivers passing queues in EB congress lanes before cutting to left to access I-/ 84 Crashes 40 Crashes LOCATIO: B I-/ VEHICLE: Passenger Car, Semi TYPE OF COLLISIO: Sideswipe PRIMARY CAUSE: Driving Skilld FATALITIES: One (Passenger Car) ISP observes aggressive drivers passing queues on left before cutting over to right to access ramp north-west LOCATIO: East-orth VEHICLE: Motorcycle TYPE OF COLLISIO: Fixed Object PRIMARY CAUSE: Recklessness FATALITIES: One E north-west has insufficient traffic capacity, increasing the likelihood of rear-end and sideswipe collisions W SE SW E ES W WS Collision Types (Total Crashes) east-north has insufficient traffic capacity, increasing the likelihood of rear-end and sideswipe collisions 2,000 GEERAL L EGED Crash Analysis Study Limits Driver Behavior W S E Geometric Deficiencies ISP Illinois State Police Fatal Crash Location GEERAL SAFETY COCERS 1. ISP observes panhandlers operating on Circle Interchange s. Panhandlers Park a vehicle on one ramp and operate on an adjacent ramp. When police approach, the panhandlers flee their vehicles in an erratic manner, placing other motorists at risk. Crashes ( ) 1,600 1,601 1, Rear End Sideswipe Same 2. ISP otes that investigates of an initial crash typically leads to additional crashes. 3. During times of traffic congestion, shoulder width may impact the reponse time of emergency vehicles. Fixed Object All Others

4 Fast SB/WB traffic + Slow B/WB traffic + Fast WB Congress traffic RECIPE FOR CRASHES arrow bridge shoulders inhibit emergency response Triple decision points lead to rear-end and sideswipe collisions Lane Cheaters and aggressive B/WB traffic uses both lanes which attribute to crashes > UMBER OF LAES

Transportation Highway Engineering Conference February 24, 2015

Transportation Highway Engineering Conference February 24, 2015 Today s Agenda Move Illinois status Jane Addams Memorial (I-90) Rebuilding and Widening Project Building a 21 st century corridor Incorporating