31-4-1      State trunk highway system designated by Legislature--Primary factors to be considered--Limitation on removal from state trunk highway system.
31-4-2      Repealed.
31-4-3      Inclusion of city streets in system.
31-4-4      Relocations, additions, and alterations in system--Purposes.
31-4-5      State maintenance of streets included in state trunk highway system--Snow removal excepted.
31-4-6      Change ceasing to interconnect certain municipalities prohibited.
31-4-7      Hearing on change--Notice, publication, and contents--Right to appear.
31-4-8      Rerouting of trunk highways onto interstate highways.
31-4-9 to 31-4-12. Repealed.
31-4-13      Official map of system--Alterations or additions.
31-4-14      Control and supervision of system by department.
31-4-14.1      Restriction or closing of highway by secretary of transportation and secretary of public safety due to inclement weather.
31-4-14.2      Notice of closure or use restriction.
31-4-14.3      Failure to observe notice of closure or use restriction as misdemeanor--Violators subject to action for civil penalty and cost of rescue.
31-4-14.4      Restriction of use of state trunk highways through highway work zones.
31-4-14.5      Minimum maintenance road designation--Opportunity for public input--Maintenance level required.
31-4-14.6      Signs required on minimum maintenance roads--Travel at driver's risk--Sign as evidence of adequate notice.
31-4-15      Repealed.
31-4-15.1      Fishing, jumping, or diving from bridge prohibited--Violation as misdemeanor.
31-4-15.2      Fishing from bridge--Signs.
31-4-16 to 31-4-129.      Repealed.
31-4-130      State Highway 10 from Pollock to Minnesota.
31-4-131      State Highway 11 from Elk Point to Minnesota.
31-4-132      U.S. Highway 12 from North Dakota to Minnesota.
31-4-133      State Highway 13 from State Highway 34 to U.S. Highway 14.
31-4-134      U.S. Highway 14 from Interstate Highway 90 to Minnesota.
31-4-135      U.S. Highway 14 Alternate from Interstate Highway 90 at Spearfish via Lead-Deadwood to Interstate Highway 90 at Sturgis.
31-4-136      U.S. Highway 14 Bypasses at Pierre and Brookings.
31-4-137      State Highway 15 from State Highway 28 to Interstate Highway 29.
31-4-138      U.S. Highway 16 from Wyoming to Interstate Highway 190.
31-4-139      U.S. Highway 16 Alternate from U.S. Highway 16 at Custer via Keystone to U.S. Highway 16.
31-4-139.1      U.S. Highway 16B from U.S. Highway 16 to Interstate Highway 90.
31-4-140      State Highway 17 from State Highway 44 to State Highway 42.
31-4-141      U.S. Highway 18 from Wyoming to Iowa.
31-4-142      U.S. Highway 18 Hot Springs Bypass from U.S. Highway 18 to U.S. Highway 18.
31-4-143      State Highway 19 from Nebraska to State Highway 34.
31-4-144      State Highway 19 Alternate from State Highway 46 via Centerville to State Highway 19.
31-4-145      State Highway 20 from Montana to Minnesota.
31-4-146      State Highway 21 from State Highway 28 to U.S. Highway 81.
31-4-147      State Highway 22 from U.S. Highway 212 to Minnesota.
31-4-148      State Highway 25 from State Highway 50 to North Dakota.
31-4-149      State Highway 26 from State Highway 47 to U.S. Highway 281.
31-4-150      State Highway 27 from U.S. Highway 12 to North Dakota.
31-4-151      State Highway 28 from U.S. Highway 281 to Minnesota.
31-4-152      Interstate Highway 29 from Iowa to North Dakota.
31-4-153      Interstate Highway 29 Business Loop from Interstate Highway 29 via Elk Point to Interstate Highway 29.
31-4-154      State Highway 30 from west of Interstate Highway 29 to Minnesota.
31-4-155      State Highway 32 from Interstate Highway 29 to State Highway 13.
31-4-156      State Highway 34 from Wyoming to Minnesota.
31-4-157      State Highway 36 from U.S. Highway 16 Alternate to State Highway 79.
31-4-158      State Highway 37 from the Missouri River to North Dakota.
31-4-159      State Highway 38 from Interstate Highway 90 Business Loop in Mitchell to Marion Road in Sioux Falls.
31-4-160      Repealed.
31-4-161      State Highway 40 from U.S. Highway 16 Alternate to Cheyenne River.
31-4-162      State Highway 42 from U.S. Highway 281 to Iowa.
31-4-163      State Highway 43 from Nebraska to U.S. Highway 18.
31-4-164      State Highway 44 from U.S. Highway 385 to Interstate Highway 29.
31-4-165      State Highway 45 from State Highway 44 to North Dakota.
31-4-166      State Highway 46 from U.S. Highway 18 to Iowa.
31-4-167      State Highway 47 from Nebraska to North Dakota.
31-4-168      State Highway 48 from Interstate Highway 29 to Iowa.
31-4-169      State Highway 49 from U.S. Highway 18 to State Highway 47.
31-4-170      State Highway 50 from State Highway 34 to Iowa.
31-4-171      State Highway 52 from State Highway 37 to U.S. Highway 81.
31-4-172      State Highway 53 from south of U.S. Highway 18 to Interstate Highway 90.
31-4-173      State Highway 63 from U.S. Highway 18 to North Dakota.
31-4-174      State Highway 65 from U.S. Highway 212 to North Dakota.
31-4-175      State Highway 71 from Nebraska to U.S. Highway 18 Bypass.
31-4-176      State Highway 73 from Nebraska to North Dakota.
31-4-177      State Highway 75 from State Highway 20 to North Dakota.
31-4-178      State Highway 79 from U.S. Highway 18 to North Dakota.
31-4-179      U.S. Highway 81 from Missouri River to Interstate Highway 29.
31-4-180      U.S. Highway 83 from Nebraska to North Dakota.
31-4-181      U.S. Highway 85 from Wyoming to North Dakota.
31-4-182      State Highway 87 from U.S. Highway 385 to U.S. Highway 16.
31-4-183      State Highway 89 from U.S. Highway 18 to State Highway 87.
31-4-184      Interstate Highway 90 from Wyoming to Minnesota.
31-4-185      Interstate Highway 90 Business Loops at Oacoma, Chamberlain, and Mitchell.
31-4-186      State Highway 101 from State Highway 22 to Gary.
31-4-187      Repealed.
31-4-188      Repealed.
31-4-189      State Highway 106 from State Highway 25 to State Highway 127.
31-4-190      State Highway 109 from U.S. Highway 12 to State Highway 15.

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31-4-191      State Highway 115 from U.S. Highway 18 to Interstate Highway 29.
31-4-192      State Highway 123 from U.S. Highway 12 to State Highway 15.
31-4-193      State Highway 127 from State Highway 10 to North Dakota.
31-4-194      State Highway 130 from U.S. Highway 12 to State Highway 271.
31-4-195      Repealed.
31-4-196      Repealed.
31-4-197      Repealed.
31-4-198      State Highway 144 from Akaska to U.S. Highway 83.
31-4-199      State Highway 153 from State Highway 52 to State Highway 50.
31-4-200      State Highway 158 from State Highway 15 to Minnesota.
31-4-201      State Highway 168 from U.S. Highway 85 to State Highway 79.
31-4-202      U.S. Highway 183 from Nebraska to Interstate Highway 90.
31-4-203      Interstate Highway 190 from Rapid City to Interstate Highway 90.
31-4-204      State Highway 203 from State Highway 258 to State Training School.
31-4-205      State Highway 204 from State Highway 1806 to State Highway 1804.
31-4-206      U.S. Highway 212 from Wyoming to Minnesota.
31-4-207      Repealed.
31-4-208      State Highway 324 from Interstate Highway 29 to State Highway 13.
31-4-209      State Highway 224 from Alpena to State Highway 37.
31-4-210      Interstate Highway 229 from Interstate Highway 29 to Interstate Highway 90.
31-4-211      Repealed.
31-4-212      Repealed.
31-4-213, 31-4-214.      Repealed.
31-4-215      State Highway 239 from State Highway 10 to Long Lake.
31-4-216      State Highway 240 from Interstate Highway 90 via Badlands National Park to Interstate Highway 90.
31-4-217      State Highway 244 from U.S. Highway 16 to Mount Rushmore National Monument.
31-4-218      Repealed.
31-4-219      State Highway 247 from U.S. Highway 12 to State Highway 10.
31-4-220      State Highway 248 from State Highway 240 to Interstate Highway 90.
31-4-221      State Highway 249 from State Highway 47 to State Highway 34.
31-4-222      State Highway 251 from Nebraska to U.S. Highway 18.
31-4-223      State Highway 253 from U.S. Highway 12 to State Highway 47.
31-4-224      State Highway 258 from Interstate Highway 90 to U.S. Highway 281.
31-4-225      State Highway 262 from Interstate Highway 90 to State Highway 42.
31-4-226      Repealed.
31-4-227      State Highway 271 from U.S. Highway 12 to North Dakota.
31-4-228      State Highway 273 from Interstate Highway 90 to State Highway 1806.
31-4-229      U.S. Highway 281 from Nebraska to North Dakota.
31-4-230      Repealed.
31-4-231      Repealed.
31-4-232      State Highway 314 from State Highway 50 to Yankton.
31-4-233      Repealed.
31-4-234      State Highway 377 from State Highway 44 to Badlands National Park.
31-4-235      U.S. Highway 385 from Nebraska to U.S. Highway 85.
31-4-236      State Highway 391 from Nebraska to U.S. Highway 18.
31-4-237      State Highway 407 from Nebraska to U.S. Highway 18.
31-4-238, 31-4-239.      Repealed.
31-4-240      Repealed.

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31-4-241      Repealed.
31-4-242      Repealed.
31-4-243      State Highway 445 from State Highway 79 to Interstate Highway 90.
31-4-244      State Highway 471 from State Highway 71 to U.S. Highway 18.
31-4-245      State Highway 473 from U.S. Highway 14 Alternate to Stewart Slope Road.
31-4-246      State Highway 1804.
31-4-247      State Highway 1806.

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