DHA’s roots are as experts of the Highway Bridge Program. We have maintained long-term relationships with critical decision makers at the Caltrans and FHWA headquarters. In addition to our extensive Caltrans experience, our structures engineers specialize in the following:

  • Bridge Design and Rehabilitation
  • Seismic Retrofit
  • Feasibility Studies
  • Advanced Planning Studies
  • Bridge Plans of Action, Scour Studies, and Mitigation
  • Load Rating

List of Projects | Structures

  • 11th Street East Tracy Overhead | City of Tracy
  • Air Park Drive Bridge over Oceano Beach Lagoon | San Luis Obispo County
  • Alpine Meadows Road Bridge over Truckee River | Placer County
  • Anapamu Street Bridge | City of Santa Barbara
  • Auburn Boulevard Bridge over Arcade Creek | City of Sacramento
  • Avila Drive Bridge over San Luis Obispo Creek | San Luis Obispo County
  • Bell Road Bridge over Big Indian Creek | Amador County
  • Bunker Hill Road Bridge over Rancheria Creek | Amador County
  • Brewer Road Bridges | Placer County
  • Buck Avenue Bridge over Alamo Creek | City of Vacaville
  • Carpinteria Avenue Bridge over Carpinteria Creek | City of Carpinteria
  • Chapala Street Bridge over Mission Creek | City of Santa Barbara
  • City College Light Rail Station Pedestrian and Bicycle Crossing | City of Sacramento
  • Clay Street Realignment and Bridge Replacement | City of Placerville
  • Coombs Street Bridge | City of Napa
  • Davis Creek Bridge | Mendocino County
  • De La Guerra Street Bridge over Mission Creek | City of Santa Barbara
  • Dry Creek Bridge Replacements at Millerton Road | Fresno County
  • Dowd Road Bridge over Yankee Slough | Placer County
  • Fernald Point Lane Bridge | Santa Barbara County
  • Fiddletown Road Bridge over North Fork of Dry Creek | Amador County
  • Forsythe Creek Bridge | Mendocino County
  • Gilbert Road Bridge over TID Ceres Main Canal | Stanislaus County
  • Goleta/US 101 Overcrossing | City of Goleta
  • Gutierrez Street Bridge over Mission Creek | City of Santa Barbara
  • Hickman Road Bridge over Tuolumne River | Stanislaus County
  • Hollister Avenue Bridge over San Jose Creek | City of Goleta
  • Iowa City Road Bridge Replacement | Yuba County
  • Kinevan Road Bridge | Santa Barbara County
  • Little Dry Creek Bridges | Fresno County
  • Nelson Lane Bridge over Markham Ravine | City of Lincoln
  • Mare Island Bridge West Span | City of Vallejo
  • Michigan Bar Road Bridge over Cosumnes River | Sacramento County
  • Montecito-Yanonali Street Bridge | City of Santa Barbara
  • Monte Rio Bridge over Russian River | Sonoma County
  • New York House Road Bridge over Dry Creek | Yuba County
  • Oak Creek and Buckeye Road Bridge Replacements | Mariposa County
  • Oak Ridge Drive Bridge over Linda Creek | City of Roseville
  • Old Amador Road Bridge over Rancheria Creek | Amador County
  • Oregon Gulch Road Bridge | Butte County
  • Punta Gorda Street Bridge over Sycamore Creek | City of Santa Barbara
  • Railroad Avenue Bridge over Dry Creek | City of Winters
  • Red Cap Road Bridge over Big Rock Gulch | Humboldt County
  • Rio Linda Boulevard Bridge over Magpie Creek | City of Sacramento
  • Ronan Creek Channel and Lions Creek Trail | City of Gilroy
  • Sacramento Street Bridge | City of Vallejo
  • San Jose Creek Bike Pathway | City of Goleta
  • San Pablo Avenue Bridge over Rodeo Creek | Contra Costa County
  • Scales Road Bridge over Slate Creek | Yuba County
  • Sheldon Road and Bradshaw Road Bridge Replacement and Intersection Improvements | City of Elk Grove
  • Sloat-Poplar Valley Road Bridge over Middle Fork of Feather River | Plumas County
  • South Bay Boulevard Bridge over Los Osos Creek | San Luis Obispo County
  • Spring Valley Bridge Replacements | Lake County
  • Timbuctoo Road Bridge over Deep Ravine No. 1 | Yuba County
  • Trinity River Bridge | Trinity County
  • Union Road Bridge | San Benito County
  • Waldo Road Bridge over Dry Creek | Yuba County
  • Walerga Road Bridge Replacement at Dry Creek | Placer County
  • Walnut Grove Bridge Replacement | San Joaquin County
  • Wildwood Road Bridge over Temple Creek | San Joaquin County
  • Wimer Road Bridge over North Branch of Indian Creek | San Joaquin County
  • Wohler Road Bridge over Russian River | Sonoma County