PROJECT : OREGON TRANSPORATION INVESTMENT ACT (OTIA) BRIDGES, Statewide, Oregon

Geotechnical projects - Transportation - Subsurface Investigation on OR 395
Subsurface Investigation on OR 395 near John Day
Repairing cracked and structurally deficient bridges was the major component of the 2003 Oregon Transportation Investment Act (OTIA). Early in the implementation of the program, Cornforth Consultants was retained to perform geotechnical reviews for nearly 200 previously identified cracked bridges. This allowed ODOT to identify where geotechnical data was missing or inadequate, and to properly prepare for required subsurface investigations throughout the state.

Following the early phase, Cornforth Consultants carried out subsurface exploration and laboratory test programs at 24 bridges throughout Oregon, including bridges on:

  • Interstate 84
  • US 26
  • US 97
  • US 395
  • Oregon 6
  • Oregon 19
  • Oregon 78
  • Oregon 82