Major Projects Questionnaire

Project Information

Agency Name TxDOT Houston District
Project Title SH 6 Resiliency at Addicks Reservoir
Facility/Street/Highway SH 6
Limits From IH 10 W to Clay Road
Description Raise roadway to eliminate flooding from Addicks Reservoir.
Timeframe Long Term (More than 10 Years)
Estimated Cost $250,000,000.00

Regional Transportation Plan Goals

According to the 2045 RTP, this project falls under H-GAC’s Manage and Maintain strategies, which directly support all five of H-GAC’s goals of improving safety, achieving/maintaining a state of good repair, moving people and goods efficiently, strengthening regional economic competitiveness, and protecting cultural and natural resources. [1] Improve Safety: This project will reduce flooding that is a hazard on the roadway and reduce weather-related crashes. [2] Achieve & Maintain State of Good Repair: This project will prevent flood damage to the facility, extending the state of good repair of the facility. [3] Move People and Goods Reliably and Efficiently: This project will reduce weather-related congestion and resulting crashes, increasing the reliability of the facility. [4] Strengthen Regional Economic Competitiveness: This project will reduce weather-related congestion and resulting crashes, increasing the truck travel time reliability of the facility, boosting regional and economic competitiveness. [5] Conserve and Protect Natural and Cultural Resources: This project will reduce emissions caused by weather-related idling and congestion.

Regional Significance

Roadway

Principal Arterial or Higher Functional Class

Potential Crash Reductions

4.271

9.763

Crash rates for this segment are per 100 million VMT. The fatality rate is 4.271, higher than the statewide average (1.23), and the serious injury rate is 9.763, higher than the statewide average, (6.18). This project is designed to elevate the roadway, effectively reducing the risk of flooding and subsequent weather-related crashes. The widening, expanding from 6 to 8 lanes, coupled with the elevation of the roadway to mitigate flooding from Addicks Reservoir, aims to enhance safety by reducing primary and secondary crashes caused by adverse weather conditions or congestion. Adding shoulders to the facility may reduce head-on, sideswipe, and pedestrian crashes, among others. Shoulders will allow vehicles to move off the roadway after collisions, reducing further crashes caused by congestion. The addition of bicycle infrastructure will allow cyclists to safely use the facility and reduce points of conflict with vehicles, thus improving the overall safety of the segment. The consolidated crash reduction factor for this project is 118%, as a result of installing shared-use shoulders (WC 504), installing sidewalks (WC 407) and providing additional travel lanes (WC 517).

Potential Congestion Reductions

No

1.0 – 1.25

Travel Time Index (TTI) is a ratio that compares peak period travel times along a corridor to average travel times, thus estimating a relative level of rush hour congestion. Current TTI for the project area is 1.13, indicating that it takes 1.13 times as long to travel this corridor in the peak period than average, which is mildly congested.

This facility will be reconstructed and raised out of the floodplain of the reservoir, this will contribute to an improved traffic operation. The segment will be brought up to TxDOT and FHWA safety design standards.

Connectivity to Jobs, Medical Facilities, and Activity Centers

Yes

7,433

No

Yes

This project improves resiliency by raising the bridge higher than the reservoir and relieves congestion by adding capacity. This project connects the Energy Corridor (Activity Center and many jobs) to residential neighborhoods to the north. The MD Anderson Cancer Center West Houston is nearby this project. There is a Harris County Public Health Bear Creek WIC office next to this project corridor too.

State of Good Repair

Less than 30 years

Good

This segment contains pavement in Good condition according to TxDOT and FHWA guidelines. This facility will be reconstructed and raised out of the floodplain of the reservoir, which will contribute to a state of good repair and improve the service life of the facility.

Biking and Walking Conditions

Shared Use Shoulders could be constructed on this new bridge over the reservoir as possible. Wide shoulders will provide room for cyclists and pedestrians to utilize the facility and maintain a safe distance from vehicle traffic.

Impacts to Vulnerable Populations

7,492

12,485

3,382

1,030

525

1,573

37.60

The area surrounding the project segment has a higher low-income population (20.52%) as compared to the regional average of 13.5%. The area surrounding the project segment has a higher minority population (75.75%) as compared to the regional average of 65% minority. Because of its central location in the regional network, the project will produce improvements in mobility and connectivity for vulnerable populations as well as connectivity to schools, medical facilities, and social services for the regional population. As a result of the improvement, vulnerable populations will have increased resilience and evacuation capacity in the event of hazards. According to HGAC’s Regional Resilience Tool, the project segment sits on a facility that is rated as having high vulnerability to flooding and is ranked as moderate criticality for accessing key facilities. The project will increase access to and reliability of transit services for vulnerable populations, who generally rely more on these services.

The area surrounding the project segment has a higher low-income population (20.52%) as compared to the regional average of 13.5%. The area surrounding the project segment has a higher minority population (75.75%) as compared to the regional average of 65% minority. TxDOT’s Environmental Process is designed to ensure compliance with Title VI of the Civil Rights Act of 1964, and the Executive Order on Environmental Justice. Standard practice is to implement projects that provide user safety and operational efficiency while taking into account environmental quality and impacts to surrounding communities. In practice this means identifying and assessing potential project impacts, then proposing measures to avoid, minimize and/or mitigate disproportionately high and adverse effects to Environmental Justice Populations. For example, the project will improve drainage to ATLAS-14 standards, which will mitigate impacts from added capacity to vulnerable populations.

Hurricane Evacuation Route

No

Yes

SH 6 connects directly to IH 10 W which is identified as an evacuation route.

Additional Documents