WilliamsEngineering,Inc.
  • Natural Channel Improvements
  • Man-Made Channels
  • Box & Round Pipelines to 96"
  • Inverted Siphons
  • Bridges & Culverts
Stormwater Engineering:
Conveyance Facilities

WEI has designed drainage conveyance facilites ranging from detailed onsite systems, including roof drains and parking and landscaping areas, to large round and box section pipelines and inverted siphons up to 96 inches. Designs include hydraulic channels, both man-made and natural channel conveyance, erosion, and stability improvements, box culverts and bridges, along with associated hydraulic structures and erosion protection. Special attention is given to materials and construction characteristics, adequate flow velocities, erosion and scour, water quality, aesthetics, functionality, cost, and maintenance.

Selected Projects


Mesa
County Fairgrounds Drainage
Improvements: Phases 1 & 2,
Mesa
County
, CO
Design involved approximately 4500
LF storm drain up to 24" in diameter,
30 inlets, and 42 connections to roof
drains at
County Fairgrounds.

32.5 Rd. Storm Drain, Mesa County, CO
Design of 2000 lineal feet of 36 inch
storm drain, with many conflicting

utilities and a canal crossing. Project
included replacement of a concrete
ditch with a pipe irrigation system
and related appurtenances.

South Avenue Reconstruction 5th St.
to 9th St., Grand Junction,
CO
Roadway contained 24", 21", and 15"
parallel combined sewers. Designed
for combined sewer separation using
existing lines plus new 48" storm
drain. Special challenges were other
utilities in the same street - two active
waterlines, a medium pressure 10" gas
line, 12" high pressure gas line, two
banks of underground electric, overhead
high voltage lines, irrigation pipeline,
and underground telephone all in 80'
of R.O.W.

Squaw Peak Parkway, Phoenix, AZ
Performed hydraulic evaluations and
designs related to truncation of
existing systems caused by the
proposed
Squaw Peak Parkway,
including pipes and siphons up to 96
inches.


25 Road Storm Drain, Grand Jct., CO
Design Ranchmans Ditch overflow and
25 Road local area drainage system with
drain pipes up to 60" in diameter.

Orchard Ave. Drain, Grand Jct., CO
Analyzed drainage in the Logan Drain
system, design proposed systems up
to 60" outfalls.

Roadway Reconstruction & Drainage
Project, Collbran, CO
Design of reconstruction of over two
miles of local residential streets and
collectors with 27 intersections, and
provide drainage improvements.

State Hwy 77, ADOT, AZ
Drainage Engineer for the Showlow-
Taylor project involving a 6.5 mile
stretch of highway.

Butler Avenue Interchange, ADOT, AZ
Design drainage system upgrade for an
existing facility at Butler Avenue
Interchange which was improved from
two lanes to five lanes.

Redlands Grove, Mesa County, CO
Evaluate and design channel for Colorado
Nat'l Monument runoff through a
subdivision. Design included HEC-11,
HEC-14, HEC-15, and HDS-5 for flow
conveyance, flexible lining, bend, and
drop structure.

For more information, Contact Us.

Last Updated December 2006.