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SR 99 North Corridor Study - Aurora Bridge

Final Recommendations to Make Aurora Safer and Keep It Moving

Problem

  • High number of accidents and a potential for severe accidents
    • 33 accidents occurred on the Aurora Bridge with one fatality*
  • Traffic congestion

*Accident data 1999-2001

The Aurora Bridge is over 50 years old, and therefore, wasn't built to modern design standards:

It has the following deficiencies:

  • Narrow (9.5 feet) lanes -Buses and other large vehicles crossing the bridge often straddle two of the narrow lanes
  • No median barrier
  • No barrier separating the roadway and sidewalk

Aurora Bridge Circa 1930

Photo of Aurora Bridge circa 1930
Click to enlarge.

Recommendations:

  • Widen the existing lanes on the bridge to 11 feet for the center lane and 11.5 feet for the inside and curb lane (estimated cost $29 million)
  • Add a median barrier
  • Widen and relocate pedestrian facilities under the bridge

Aurora Bridge 2002

Photo of Aurora Bridge in 2002
Click to enlarge

Benefits of Improvements:

  • Reduced accident potential for vehicular accidents
  • Increased vehicular mobility
  • Reduced accident potential for pedestrian/vehicle accidents
  • Increased pedestrian mobility.
Proposed Enhancements

Aurora Bridge Proposed Enhancements Drawing
Click to enlarge

Other Alternatives Considered:

Several options were considered for the Aurora Bridge. The following alternatives were eliminated because the bridge is at its maximum load.

  1. Sidewalks at roadway level on both sides
  2. Sidewalks at roadway level on one side
  3. Additional through or merge lanes.

To accomodate wide lanes and sidewalks on the bridge deck a new bridge would need to be constructed. A new bridge was estimated to cost $200 million and was therefore excluded from further discussion.