HOUSTON I-45 Parkway + Tunnel

 
 
 

Paper in PDF published by ASCE and presented at the ASCE Fall 2007 meeting in Fort Worth

 
Long Term Vision for Development of I-45: Before and After
(click on the image)
Graphics by: T. Dornbusch
 
Houston Press
 
KPFT 90.1FM
 
Houston Business Journal
 
I-45 TxDOT Update
Currently TxDOT is conducting a study that is looking at alternative designs for I-45 and the feasibility of tunneling managed lanes.
 
 
 
 
 
 
 
 
 
I-45 Parkway & Tunnels
The vision for future development of I-45
Graphics by: T. Dornbusch
The I-45 Parkway & Tunnel Concept is a long-term solution to traffic congestion on the I-45 corridor. It consists of four basic phases:
1. Build two tunnels beneath the existing I-45, from Beltway 8 in the north to US-59 south of downtown. This distance is about 15 miles.
2. Relocate traffic from the existing HOV lane on I-45 to these roadway tunnels and re-stripe existing I-45 to improve lane configuration. This will allow the existing HOV lanes to be converted to future high capacity transit (light rail) and will reduce the number of surface lanes. The tunnels will lessen the demand for surface lane capacity on the existing I-45.
3. Implement a research program to develop innovative and domestically (US) produced high capacity transit technologies to be incorporated into the I-45 corridor.
4. Development of the I-45 Parkway with high capacity transit (light rail) and implementation of strategies for stimulating transit oriented development.
I-45 Parkway & Tunnels
Proposed project limits
The I-45 Parkway & Tunnel Concept extends from Beltway 8 (Greenspoint) in the north to US-59 south of Downtown.
1. Blue segment, from Beltway 8 to 610 Loop: Park and ride lot located at Greenspoint Mall would provide drivers the ability to park and and access downtown via high capacity transit (light rail).
2. Light blue segment, from 610 Loop to I-10: TxDOT's current proposed expansion of I-45 will widen the highway and result in greater separation of adjacent neighborhoods and decrease their quality of life.
3. Orange segment, from I-10 to Pierce Elevated: There is no TxDOT plan for expanding I-45 south of I-10, but the adding lanes north of I-10 will require an increase in the number of lanes on I-45 south of I-10, with significant impact to the quality of business in downtown.
4. Green segment, Pierce Elevated: This unattractive and uninviting separation between Downtown and Midtown could, if the Pierce Elevated lanes were relocated into roadway tunnels, be transformed into a transit oriented boulevard.

 
 
North Hardy Corridor Study

METRO, TXDOT and H-GAC partnered in conducting the North-Hardy Planning Study. The North-Hardy corridor extends about 30 miles, from I-10 to Montgomery County. The study consisted of two components, a transit and highway component.The transit component of the study identified the expansion of the Main Street light rail system north to Northline Mall and construction of two dedicated HOV lanes on I-45. The highway component considered various alternatives with the preferred alternative for I-45 between Beltway 8 and I-10 recommending a total of 16 total lanes from the current configuration of 13 lanes. The preferred alternative recommends: eight (8) all purpose lanes, four (4) managed lanes, and four (4) service road lanes. Link to HGAC report.

Given the success that DART has had in building light rail along the North Central Expressway in Dallas, a very similar corridor to the studied I-45 corridor, it is surprising that METRO did not identify placement of light rail in the center of I-45 where it currently has the HOV lanes. The potential for people to park and ride at Greenspoint Mall and Northline Mall and have direct access to Downtown and Midtown is significant. Placement of high capacity transit such as light rail in the I-45 corridor provides opportunities for extending light rail to The Woodlands, Intercontinental Airport, and Hobby Airport.