Click on the images for a larger view. Be sure to look at the Structurepoint page, which has alternatives for this intersection commissioned by Madisonville Community Council.
A note on 3-lane roundabouts: In these scenarios where three-lane roundabouts are presented, one design/build option would be for ODOT to acquire enough land to build a three-lane roundabout, but only to build the outer two lanes in a first phase. Then, if traffic warranted it, later — during a second phase of construction -- ODOT could add an inner lane (the third lane) on the inside of the circular roundabout at a modest cost or about $500,000. For motorists and the community, the advantage in this scenario would be that two-lane roundabouts are easier to navigate and consume less land, so if the Route 32 relocation from Fairfax to Eastgate is never built, traffic on Red Bank Expressway may never reach the higher level that would require the third lanes to be added by ODOT.
1. Alternative 1 (ODOT): Signalized Intersection
This is a traffic light with 8 lanes on Red Bank Expressway, which runs underneath Madison Rd. There is a long entrance ramp from Madison directly to I-71.
2. Alternative 1-A (ODOT): Signalized Intersections
3. Alternative 2 (ODOT): Roundabouts
4. Diamond Interchange (City): Overpass and Exit Ramps
Duck Creek is an overpass running above Red Bank Expressway. There is one exit ramp and one entrance ramp in any direction to get from one street to the other. This is the same as suburban interstate exits. Duck Creek continues into the John P. Parker School property and connects with MedPace Way.