Existing statewide mandatory sidepath laws:
Alabama:	32-5A-263
Kansas:	search for: Kansas Statute 8-1590(d)
Louisiana:	32-197
Nebraska	find your way to: NS 60-6317(3)
North Dakota:	39-10.1
South Carolina:	find your way to: 56-5-3430
Vermont:	23-13-1139 (statewide mandatory rule, with allowance for local exceptions!)
West Va:	find your way to: §17C-11-5.
Wyoming:	W.S. 31-5-704(c)

No statewide mandatory sidepath laws:
Alaska	Appendix C in Bike/Ped Plan (but mandatory use of shoulder)
Arizona:	(28-815) (search: riding on roadway)
California	1-4-21202
Colorado	42-4-1412
Connecticut:	**
Delaware:	**
Florida:	**
Georgia:	40-6-294.(c&d) (signage-required bikepath law)
Hawaii:	(mandatory bike lane** law, instead)
Idaho:	**
Illinois:	**
Indiana:	**
Iowa:	(321-234)
Maine:	(29-A,19,1,2063)
Massachusetts	XIV-85-11B
Michigan	257.660(..by local ordinance)
Minnesota:	169.222
Missouri:	307-190
Montana	John Williams, personal communication
Nevada:	(NRS 484.509)
New Hampshire	265:144
New Jersey:	(39.4-14.2)
New Mexico:	(66-3-705)
New York:	(34-1234) (but mandatory use of bike lane)
N Carolina:	**
Ohio:	** (Sec 4511.55) (but local authorities...)
Oklahoma:	** (47-11-1205) (but local authorities...)
Oregon	OS 814.420 (public hearing required...)
Pennsylvania:	** (but signs may require...)
Rhode Island	31-19-6
South Dakota:	32-20B-5
Tennessee:	(55-8-175. Riding on roadways and bicycle paths)
Texas:	551.103
Utah:	41-6-87(but local signage allowed)
Virginia:	** (allows locally mandatory sidepaths)
Washington:	RCW 46.61.770
Wisconsin:	346.80