Providing program management for the Oregon Department of Transportation's
OTIA III State Bridge Delivery Program


OTIA III Bridges TransGIS

OTIA III Bridges TransGIS is an ODOT-sponsored site dedicated to disseminating environmental information related to the OTIA III program to approved OTIA III Stakeholders. Currently housed at, this interactive site is undergoing continuous improvement, and will ultimately be hosted at

Usage Notes:

  • Login access is currently limited. for access requests.
  • Disable popup blockers before entering.
  • Access with the current version Microsoft Internet Explorer (IE6) and an Internet connection. This is the ODOT standard, and the only browser that is supported at this time.
  • All information presented is subject to ODOT spatial data usage policies.
  • The site contains extensive online help for users.

What is TransGIS?

TransGIS is ODOT’s set of web-accessible mapping tools designed for users of every skill level, presenting many levels of complex data. By offering this quick and integrated access to the many data resources available, TransGIS enhances ODOT´s ability to address agency needs and goals. Organized by theme, TransGIS provides detailed information including statewide transportation management system’s data, Statewide Transportation Improvement Program (STIP) projects and environmental data. OTIA III TransGIS represents the latest iteration in the TransGIS series, and unveils increased functionality along with a new look.

What is the OTIA III Bridges TransGIS?

The OTIA III TransGIS presents the data on which the OTIA III environmental baseline reports were generated. Early in 2003, contractor field crews began collecting environmental data for bridges and sites in the OTIA III State Bridge Delivery Program. The intent of this effort was to generate a single database that is more accurate and current than existing natural resource databases. While data collection and management have been essential to the development of the environmental baseline reports, the data collected will be applied to a wider range of applications from design and construction planning to permitting reviews. To that end, the data are being made available to both ODOT and its contractors.

What data was available?

Field teams inventoried over 400 bridge sites between April 2003 and October 2004. They collected information pertaining to biological resources, wetlands, land use, and hazardous materials. Additional specialists were used to collect information on historic resources, archaeological resources, and rare plants. Over 10,000 digital photographs were compiled by field teams and historic resources specialists, and are available on the site. The following information was collected at each site, most of which are available through OTIA III Bridges TransGIS:

  • Air Quality
  • Archaeological and Cultural Resources
  • Wildlife Resources
  • Aquatic Resources
  • Botanical Resources (Rare Plants)
  • Hazardous Materials
  • Historic Built Environment Resources
  • Land Use
  • Noise
  • Section 4(f) / 6(f) Resources
  • Socioeconomics
  • Water Quality and Floodplains
  • Wetlands and Other Waters of the U.S. and State
  • Visual and Aesthetics

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