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Legend (ArcGISOnline/IdahoTransportationLayersForOpenData)

Mile Post Sign - 1 Mile (10)
1/10 Mile Point (11)
Mile Point Log (C01) (12)
Bluetooth Detection (147)
Commercial Vehicle Information System and Network (CVISN) (146)
Highway Advisory Radio (HAR) (145)
Dynamic Message Sign (DMS) (144)
Closed Circuit Television Camera (CCTV) (143)
Highway Advisory Radio Beacon (HAR) (142)
Road Weather Information System (RWIS) (141)
Crash 2005 - Present (123)
Interchange (39)
Rest Area (40)
Historical Marker (43)
District Office (44)
ITIP_Project_Points (162)
<all other values> <all other values>
Airport Development Airport Development
Airport Planning Airport Planning
Bridges Construction Approaches Bridges Construction Approaches
Environmental Preservation Environmental Preservation
Major Widening Major Widening
New Route New Route
Planning/Studies Planning/Studies
PM PM
Public Transit Public Transit
Reconstruction/Realignment Reconstruction/Realignment
Relocation Relocation
Resurface/Restore/Rehabilitate/Widen Resurface/Restore/Rehabilitate/Widen
Safety/Traffic Operations Safety/Traffic Operations
STM/STKP/BLDG STM/STKP/BLDG
Supporting Facilities Supporting Facilities
System Plan System Plan
LocalRoadInventory (166)
ITIP_Project_Lines (163)
Bridges Construction Approaches Bridges Construction Approaches
Environmental Preservation Environmental Preservation
Major Widening Major Widening
New Route New Route
Planning/Studeies Planning/Studeies
PM PM
Reconstruction/Realignment Reconstruction/Realignment
Resurface/Restore/Rehabilitate/Widen Resurface/Restore/Rehabilitate/Widen
Safety/Traffic Operations Safety/Traffic Operations
Bridge (152)
AADT 1999 - Present - Daily Traffic (50)
0 - 1,000 Vehicles per Day 0 - 1,000 Vehicles per Day
1,001 - 5,000 Vehicles per Day 1,001 - 5,000 Vehicles per Day
5,001 - 10,000 Vehicles per Day 5,001 - 10,000 Vehicles per Day
10,001 - 50,000 Vehicles per Day 10,001 - 50,000 Vehicles per Day
> 50,000 Vehicles per Day > 50,000 Vehicles per Day
Speed Zone MPH (68)
20 20
25 25
30 30
35 35
40 40
45 45
50 50
55 55
60 60
65 65
70 70
75 75
80 80
Route Capacity Significant MPs (67)
Route Capacity (69)
Single Axle = 33,000 lbs; Two-Axle Tandem = 56,000 lbs; Three-Axle Tridem = 70,500 lbs Single Axle = 33,000 lbs; Two-Axle Tandem = 56,000 lbs; Three-Axle Tridem = 70,500 lbs
Single Axle = 30,000 lbs; Two-Axle Tandem = 51,500 lbs; Three-Axle Tridem = 64,500 lbs Single Axle = 30,000 lbs; Two-Axle Tandem = 51,500 lbs; Three-Axle Tridem = 64,500 lbs
Single Axle = 27,000 lbs; Two-Axle Tandem = 46,000 lbs; Three-Axle Tridem = 57,500 lbs Single Axle = 27,000 lbs; Two-Axle Tandem = 46,000 lbs; Three-Axle Tridem = 57,500 lbs
Single Axle = 25,500 lbs; Two-Axle Tandem = 43,500 lbs; Three-Axle Tridem = 54,500 lbs Single Axle = 25,500 lbs; Two-Axle Tandem = 43,500 lbs; Three-Axle Tridem = 54,500 lbs
Single Axle = 24,000 lbs; Two-Axle Tandem = 41,000 lbs; Three-Axle Tridem = 51,500 lbs Single Axle = 24,000 lbs; Two-Axle Tandem = 41,000 lbs; Three-Axle Tridem = 51,500 lbs
Single Axle = 22,500 lbs; Two-Axle Tandem = 38,000 lbs; Three-Axle Tridem = 48,000 lbs Single Axle = 22,500 lbs; Two-Axle Tandem = 38,000 lbs; Three-Axle Tridem = 48,000 lbs
Posted Bridges Posted Bridges
Designated Route up to 129K lbs (70)
Designated routes for combinations < 115 feet long including overhang. Maximum off-tracking not to exceed 6.5 feet.; 5 Designated routes for combinations < 115 feet long including overhang. Maximum off-tracking not to exceed 6.5 feet.; 5
Designated routes for combinations < 95 feet long including overhang. Maximum off-tracking not to exceed 5.5 feet. Designated routes for combinations < 95 feet long including overhang. Maximum off-tracking not to exceed 5.5 feet.
Non-Designated Routes. Use Extra Length Map for operating instructions. Non-Designated Routes. Use Extra Length Map for operating instructions.
Extra Length Route (71)
National network routes legal to operate a single trailer not exceeding 53 ft and double trailers not exceeding 68 ft (tip to tail). National network routes legal to operate a single trailer not exceeding 53 ft and double trailers not exceeding 68 ft (tip to tail).
National network routes legal to operate a single trailer not exceeding 53 ft and double trailers not exceeding 68 ft (tip to tail). National network routes legal to operate a single trailer not exceeding 53 ft and double trailers not exceeding 68 ft (tip to tail).
Routes Legal For A Single Trailer Not Exceeding 48 Feet And A Doubles Configuration Not Exceeding 61 Feet And 75 Feet Overall (Doubles Configurations Can Exceed One Or The Other And Still Be Legal). Extra Length Permit Required If Exceeding These Dimensions And Must Not Exceed 3.00 Feet Of Off-Track And 85 Feet Overall Length Including Load Overhang. Routes Legal For A Single Trailer Not Exceeding 48 Feet And A Doubles Configuration Not Exceeding 61 Feet And 75 Feet Overall (Doubles Configurations Can Exceed One Or The Other And Still Be Legal). Extra Length Permit Required If Exceeding These Dimensions And Must Not Exceed 3.00 Feet Of Off-Track And 85 Feet Overall Length Including Load Overhang.
Routes Legal For A Single Trailer Not Exceeding 48 Feet And A Doubles Configuration Not Exceeding 61 Feet Of Trailers And 75 Feet Overall (Doubles Configurations Can Exceed One Or The Other And Still Be Legal). Extra Length Permit Required If Exceeding These Dimensions And Must Not Exceed 5.50 Feet Of Off-Track And 95 Feet Overall Length Including Load Overhang. Routes Legal For A Single Trailer Not Exceeding 48 Feet And A Doubles Configuration Not Exceeding 61 Feet Of Trailers And 75 Feet Overall (Doubles Configurations Can Exceed One Or The Other And Still Be Legal). Extra Length Permit Required If Exceeding These Dimensions And Must Not Exceed 5.50 Feet Of Off-Track And 95 Feet Overall Length Including Load Overhang.
Routes legal for a single trailer not exceeding 53 ft and a doubles configuration not exceeding 61 ft of trailers and 75 ft overall. Routes legal for a single trailer not exceeding 53 ft and a doubles configuration not exceeding 61 ft of trailers and 75 ft overall.
Critical Rural Freight Corridors (124)
Critical Urban Freight Corridors (125)
Pavement Condition (73)
Good Good
Fair Fair
Poor Poor
Very Poor Very Poor
Roadway Charteristics (78)
Terrain Type (89)
Mountainous Mountainous
Rolling Rolling
Flat Flat
Unclassified Unclassified
Highway Tier (93)
Interstate Interstate
Expressway Expressway
State State
Regional Regional
District District
Scenic Byway (94)
Scenic Byway Scenic Byway
ITD Functional Class (95)
Interstate Interstate
Other Freeways or Expressways Other Freeways or Expressways
Other Principal Arterials Other Principal Arterials
Minor Arterial Minor Arterial
Major Collector Major Collector
Minor Collector Minor Collector
State Highway System (LRS) (131)
Interstate Interstate
US Highway US Highway
State State
All Idaho Roads by Jurisdiction (130)
Road Road
All Idaho Road (97)
Road Road
ITD District (135)
ITD Maintenance District (136)
ITD Foreman Area (137)
OTIS_Label_Points_For_lines (165)
<all other values> <all other values>
Airport Development Airport Development
Airport Planning Airport Planning
Bridges Construction Approaches Bridges Construction Approaches
Environmental Preservation Environmental Preservation
Major Widening Major Widening
New Route New Route
Planning/Studies Planning/Studies
PM PM
Public Transit Public Transit
Reconstruction/Realignment Reconstruction/Realignment
Relocation Relocation
Resurface/Restore/Rehabilitate/Widen Resurface/Restore/Rehabilitate/Widen
Safety/Traffic Operations Safety/Traffic Operations
STM/STKP/BLDG STM/STKP/BLDG
Supporting Facilities Supporting Facilities
System Plan System Plan