Datasets
Historical bridge survey and inventory data from various sources. Records are cross-referenced with our bridge database where possible.
ODOT Off System Bridges NBI
2026Oklahoma Department of Transportation (ArcGIS / NBI)
Off-system (locally maintained) bridges in Oklahoma's National Bridge Inventory, exported from ODOT's public ArcGIS service. Sibling to the On System dataset; cross-referenced against existing bridges by NBI number.
ODOT On System Bridges NBI
2026Oklahoma Department of Transportation (ArcGIS / NBI)
National Bridge Inventory data published by the Oklahoma Department of Transportation, exported from their public ArcGIS service. Cross-referenced against existing bridges by structure number / NBI number.
Oklahoma Spans of Time 2021
2021Oklahoma Department of Transportation
Oklahoma Department of Transportation bridge survey conducted in 2021 documenting historic truss bridges across Oklahoma.
Oklahoma Spans of Time 2007
2007Oklahoma Department of Transportation
Oklahoma Department of Transportation bridge survey conducted in 2007 documenting historic bridges across Oklahoma.
Oklahoma Spans of Time 1993
1993Oklahoma Department of Transportation / Spans of Time (1993)
The original 1993 Spans of Time historic highway bridge inventory of Oklahoma. Predecessor to the 2007 and 2021 surveys; cross-referenced against existing bridges by structure number.