Bridge Structures

This dataset is a point representation of all bridges within the KYTC Bridge Inventory. Some large culverts and tunnels are also included. The attributes are a combination from AASHTO BrM and Bentley XOR Highways applications. Information provided complies with FHWA's NBIP (National Bridge Inventory Program).

2002 aerial photos of the City and the surrounding area.

Mile markers for select Boulder County roads and CDOT roads. The Boulder County roads were initially selected based on historic precedent, referencing printed maps in the Public Works (formerly Transportation) Department. Markers for more roads may be added after further review. Historic roads included some within municipalities, and mile markers were retained for those roads, regardless of annexations. Mile marker points along County roads were measured using GIS. Each road length was calculated using GIS, depending on accuracy from the Colorado StatePlane coordinate system and then accounting for slope from a 2.5 foot DEM. Markers, every quarter mile, were located along routes using a linear referencing method. Markers on CDOT roads were selected from a feature service owned by them. The selected roads were based on the Road_Map_Roads feature class. Note: Road Maintenance mile posts will be move based on markers in this dataset.

Boulder County crashes mapped from CDOT data. The crash records have a variety of location information, so multiple methods were used to geolocate them, from using lat/long on CDOT roads to geocoding based on the 'Location_x" fields. The records include all mappable crashes starting from January 1, 2021 and ongoing. Hence, this dataset does not include all crash data received from CDOT. Further, historic crash data can be found in the dataset named “Crashes_Historic”.

This is a dataset representing the electronic traffic signals, fixed electronic signs, and beacons inventory on Boulder County owned roads, which are maintained by the Public Works Traffic Team. It is rare for a new device to be installed, so this dataset remains unchanged for long periods of time. Records are determined by signals, signs and beacons which have an electronic source. Luminate is the primary contractor for maintenance.

Aerial photographs of Boulder from 2012, provided by DRCOG and published by BoulderCO.