ENR Southwest's May 4 print issue will feature our annual Top Design Firms ranking, where we'll be ranking the region's top architectural and engineering firms by revenue and by sector.

Responding firms include those doing business in Arizona, Nevada and New Mexico. Below you'll find a preview of just 30 of the participating firms you can expect to find on the ranking, listed in alphabetical order. Be sure to check back in May to see them all!

Affiliated Engineers Inc.

Atwell LLC

AZTEC Engineering Group Inc.

Bohannan Huston Inc.

Bridgers & Paxton Consulting Engineers Inc.

Burns & McDonnell

Carollo Engineers Inc.

Dekker/Perich/Sabatini Ltd.

DLR Group

DWL Architects + Planners Inc.

Electrical Consultants Inc.

EPS Group Inc.

Gannett Fleming

HDR

Horrocks Engineers

Merrick & Co.

Michael Baker International

Ninyo & Moore Geotechnical and Environmental Sciences Consultants

PGAL LLC

Raba Kistner Inc.

Shepley Bulfinch

SmithGroup

Souder, Miller & Associates

Stanley Consultants

Stantec

Sunrise Engineering Inc.

Terracon Consultants Inc.

Wilson & Company Inc., Engineers & Architects

Wood Rodgers Inc.

WSP USA