Hydro-Arch is a general engineering contractor who specializes in flood control structures including arch culverts, bridges, and channels. Although we construct an array of flood control structures, we specialize in the turnkey design and construction of cast-in-place arch culverts. Since 1990 we have built over 85 miles of Hydro-Arch systems throughout the Western United States. The Hydro-Arch system is not just a product; it’s a team of professionals. In short, we provide another way for you to get a project completed quickly, easily, and at a lower cost.


Wolf Michelson, the founder of Hydro-Arch, got involved with building arched culverts in 1977. As a contractor, Michelson built culverts and underground structures for entrepreneurs involved in designing these structures. Some of these were very innovative and creative. When it became apparent that a market existed for cost effective arched culverts, Michelson took some of the best ideas available at the time and by 1988 he was building arched culverts exclusively.

In May of 2014, James Moore became president of Hydro-Arch.  With the help of Mike Michelson & Dave Scott, Hydro-Arch is continuing the success through the next generation.

Twenty-nine years of specializing in one area, flood control and drainage, has resulted in Hydro-Arch becoming the leader in this field.

Awards and Accolades


Professional Affiliations

  • ACI - American Concrete Institute
  • ACPA - American Concrete Pumping Association
  • ASA - American Shotcrete Association
  • AGC - The Associated General Contractors
  • BIA - Building Industry Association
  • ASCE - American Society of Civil Engineers


State Licenses
NV State Business License 742729688
NV State Contractors Board 0034994
City of Henderson 199604512
Clark County Business License 1007777240
City of North Las Vegas 69177
City of Las Vegas C-12-03069 B-059989
Arizona State Contractors ROC166822
California State Contractors 797329
City of Adelanto 015079
City of Indio 10-00003453
City of Elsinore 0800010554
UT Dept. of Commerce 676375375551

NOTE: Our engineers are licensed in 37 States