• pond surrounded by green brush, reflecting a distant range of snow-covered mountains that are dominated by one massive mountain

    Denali

    National Park & Preserve Alaska

Rock Creek Bridge EA

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Date: March 29, 2012
Contact: Kris Fister, (907) 683-9583

The National Park Service (NPS), in cooperation with the Federal Highway Administration (FHWA), is considering replacing or retrofitting the Rock Creek Bridge on the Denali Park Road at Denali National Park and Preserve. This project would take place during the summer of 2013.
 
The Rock Creek Bridge, located just east of park headquarters, is an essential year-round link on the only road into Denali National Park. The bridge's 24-foot width, combined with its curved design, often results in westbound RV trailers and semis tracking into oncoming traffic in the eastbound lane, creating a traffic hazard. The FHWA has also identified the bridge as one of two seismically deficient bridges on the Denali Park Road.

The Environmental Assessment evaluates three action alternatives. The preferred alternative would replace the bridge with an 18-foot diameter culvert, with an embankment at the level of the existing bridge. Another alternative would include retrofitting the existing bridge for seismic stability and width. A third action alternative would include constructing a new bridge directly downstream of the existing bridge.

The NPS has published an environmental assessment (EA) for this project entitled "Rock Creek Bridge Replacement." It is available at the NPS planning website at http://parkplanning.nps.gov. The EA analyzes the impacts of the "No Action" alternative and the three action alternatives. It was completed in accordance with the National Environmental Policy Act of 1969 and the regulations of the Council on Environmental Quality (40 CFR 1508.9).

Comments on the EA may be submitted through April 30, 2012, preferably via the web site at http://parkplanning.nps.gov. Comments may also be mailed to Superintendent, Attn: Rock Creek Bridge EA, Denali National Park and Preserve, P.O. Box 9, Denali Park, AK 99755 or faxed to 907-683-9612. For questions or paper copies of the EA, please contact Steve Carwile at 907-644-3612 or via email.

Did You Know?

a green hillside and a brown scar denoting where a landslide occurred

Warmer temperatures have led to dramatic thawing of permafrost. Thaw releases carbon, as once-frozen materials decompose, but allows increased plant growth. Researchers in Denali are studying whether thawing permafrost will increase or decrease world-wide carbon emissions.