Innovative Designs and Improvements Reduce The Need for Expensive Transit Burdens

Parkway With Overpasses/Underpasses

An “at-grade parkway plan will provide the needed vehicular capacity to meet the CAMPO 2030 daily traffic projections for this location. Further, this plan will result in many longer term benefits to the region. It will provide a more highly connected local street network, and will promote more compact, transit-oriented development. It will allow for conservation and recreational opportunities along Williamson Creek, and provide bicycle/pedestrian transportation opportunities. The costs will be far less for the infrastructure, and there will be far greater long term benefits of this plan.”
2006 Fix290 Smart Mobility Study

Focus on Grade-separating Bottleneck Intersections

Many states around the country are adopting new intersection designs to create better flow and capacity. The FHWA recognizes these as viable alternatives to the traditional designs that TxDOT typically builds.

The N.C. Department of Transportation is eyeing what it calls a “compressed urban diamond interchange”—described as a modified version of a “single-point urban interchange,” or SPUI for short—for intersections where room for improvement is limited, due to restrictions such as development or environmental concerns.“DOT eyeing innovative design for desired Wilmington interchanges”, Port City Daily, Wilmington, NC

Conceptual rendering of arterial underpass with access on all corners to lower-level mass-transit bus bays

Roundabout Interchange

According to the Federal Highway Administration, roundabouts “offer substantial advantages over conventional at-grade intersections and grade-separated diamond interchanges.” They are utilized in much of the rest of the nation (and world), yet Texas is still slow to adopt them.

roundabout2Roundabouts are endorsed by many DOTs because of their “ability to safely and efficiently move traffic.”
Nevada Strategic Highway Safety Plan

roundabout1Free-flow arterial thru movements are provided by using a roundabout on a separate grade to accommodate arterial left and right turns and all movements on the cross street. In most cases the arterial is depressed and passes underneath the roundabout, and the ramps serve as frontage roads approaching the intersection.

roundabout3This roundabout in Stavanger, Norway handles 40,000 vehicles a day and has a floating “ring” above it for pedestrian and bike use.

Packaged Improvements


The City of Charlottesville, Virginia was faced with a similar traffic dilemma. The state proposed building an expensive bypass, but the community pushed back and now VDOT is focusing on fixing the specific problems.

Route 29 Solutions Initiative

“This past February, federal and local officials both determined that the proposed Route 29 Charlottesville bypass doesn’t make sense and recommended the state take the damaging proposal off the table.

This smart package of fixes targets the hot spots on Route 29 and will get traffic flowing better for everyone”

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