Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123]

▼NTravelerAPI
▼NAdmin
CBridgeOpeningDAL
▼NController
CBridgeOpeningController	Information about bridge closures due boat passage
CScanwebController	Weather information containing additional readings Access via: https://www.wsdot.wa.gov/traffic/api/api/Scanweb?AccessCode={YourAPIAccessCode}
▼NModels
CBridgeOpeningModel	Information about a bridge opening
CScanwebSiteModel	Definition for a Scanweb station
CAlert	A Highway Alert.
CArea	List of map areas available for traffic alert queries
CBorderCrossingData	Information about Canadian border crossing wait times
CBorderCrossings	Coverage Area: I-5, SR-543, SR-539, and SR-9 crossings. Provides current wait times for the various border crossings into Canada.
CBridgeDataGIS	A record containing the location and clearance information of a bridge structure
CCamera	Information about traffic camera
CClearance	Bridge clearance information, see disclaimer
CCVRestrictionData	Represents a Commercial Vehicle Restriction
CCVRestrictionDataWithId	Represents a Commercial Vehicle Restriction, includes an unique identifier
CCVRestrictions	Coverage Area: Statewide. Provides list of restrictions for commercial vehicles.
CFlowData	A data structure that represents a Flow Station.
CHighwayAlerts	Coverage Area: Statewide. Provides access to all of the active incidents currently logged in our ROADS system.
CHighwayCameras	Coverage Area: Statewide. Provides access to the camera images that appear on our Traffic pages. Currently only supports snap shots (not full video). The available cameras does not change very often.
CMountainPassConditions	Coverage Area: 15 passes (see http://www.wsdot.wa.gov/traffic/passes/). Provides real-time data on pass conditions. The data is provided by the Mountain Pass Entry system.
CPassCondition	A data structure that represents the conditions of the mountain pass.
CRoadwayLocation	Describes a specific location on a WA State Highway.
CScanwebSubSurfaceMeasurements	Measurements recorded by sub-surface sensors
CScanwebSurfaceMeasurements	Meaurements recorded by surface sensors
CTollingController	Get information for the HOV toll lanes.
CTollRate	Toll information for HOV toll lanes
CTollTripInfo	A data contract that represents Trip Information details.
CTollTrips	A data contract that represents Toll Trips.
CTollTripVersion	A data contract that represents published Toll Trip Version number
CTrafficFlow	Coverage Area: Vancouver, Olympia, Tacoma, Seattle, Spokane. Data is provided by regional Traffic Management Centers. Provides real-time data on our Traffic Flow sensor for the entire state. Possible conditions include ‘Unknown’, ‘WideOpen’, ‘Moderate’, ‘Heavy’, ‘StopAndGo’, ‘NoData’. In most cases, this data will be updated every 90 seconds.
CTravelRestriction	A travel restriction for mountain passes.
CTravelTimeRoute	Data structure that represents a travel time route.
CTravelTimes	Coverage Area: Seattle, Tacoma, Snoqualmie Pass. Provides travel times for many popular travel routes around Washington State.
CTripRate	A data contract that represents Trip rate information.
CWeatherInfo	Current information from a weather station
CWeatherInformation	Returns current weather information from weather stations that are run by the Washington State Department of Transportation
CWeatherReading	Information from a weather station
CWeatherStationData	Contains information about weather stations
CWeatherStations	Return current list of weather stations maintained by WSDOT