UT NP ARCH 100(2) - PLANS.pdf

This file is a set of architectural plans for the UT NP ARCH 100(2) Bridges on Delicate Arch Road project. The plans support a Federal Highway Administration solicitation (6982AF27B000005) for design and construction of infrastructure improvements within Arches National Park in Utah. The project involves reconstruction (4R) and restoration (3R) work on Delicate Arch Road, a principal park road that experiences heavy visitor traffic and frequent congestion. The primary objective is to address inadequate culverts at three ephemeral wash crossings—Salt Valley Wash, Salt Wash, and Winter Camp Wash—that currently cause flooding, sediment deposition, unsafe conditions, road closures, and high operational costs.

The scope includes construction of three 100-foot span concrete bridges to accommodate a 10-year design frequency flood event and allow medium-sized equipment access. The roadway profile will be raised at each wash crossing, with Salt Valley Wash requiring roadway realignment northward from its current location. The remaining restoration sections will utilize full depth reclamation or pavement removal followed by a 4-inch overlay. Principal work items include embankment construction (10,000 cubic yards), placed riprap Class 3 (1,725 cubic yards), roadway aggregate (5,140 tons), and asphalt concrete pavement installation. The architectural plans document the technical specifications and design details necessary for contractors to bid on and execute this multi-phase bridge and roadway reconstruction project.