This environmental assessment / assessment of effect examines in detail two alternatives: no action and the National Park Service preferred alternative. The preferred alternative considers rehabilitation of the roadway and associated structures on either side of Route 10 (Zion-Mt. Carmel Highway) tunnel. The road work would primarily occur on the east side of the tunnel in a 0.25-mile segment beginning at the east tunnel entrance. Modifications on the east side of the tunnel would include slurry sealing the road surface and scaling rock slopes on both sides of the road; reconfiguring two parking areas; creating a painted center median with rumble strips; relocating the crosswalk from parking area 1 to the Canyon Overlook Trail; constructing a sidewalk from parking area 2 to the Canyon Overlook Trail; eliminating three informal pullouts, one of which would be reconfigured as a slow vehicle passing lane; establish erosion-control measures for the Pine Creek slot canyon access; and replacing and relocating the ranger kiosk. The area outside the west tunnel entrance would be modified by adding rumble strips to the existing painted center median, replacing the ranger kiosk.
Environmental Assessment/Assessment of Effect: Route 10 Zion-Mt. Carmel Highway Tunnel Area Road Rehabilitation, February 2006
2006
118 pages
Report
No indication
English
Natural Resource Management , Highway Engineering , Ecology , Environmental Pollution & Control , Recreation , Effect assessments , National parks , Environmental assessments , Road rehabilitation , Highway tunnels , Alternatives , Environmental consequences , Consultation , Impacts , Mitigation measures , Coordination , Zion National Park
Evaluating the Traffic Capacity of the Zion–Mt. Carmel Tunnel in Zion National Park
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