31-12-1      Established highway systems perpetuated.
31-12-2      Change of county highway system--Order of Department of Transportation.
31-12-3, 31-12-4. Repealed.
31-12-5      Supervision of construction, improvement, maintenance, and repair of system.
31-12-6      County system at expense of entire county--Tax levy.
31-12-7      Divisions of system into sections--Recording in county road book.
31-12-8      Survey and report by superintendent on condition of system and structures.
31-12-9      Survey, plans, specifications, and estimates for permanent improvements.
31-12-10      Bench marks on permanent structures.
31-12-11      Commencement of construction work.
31-12-12      Small projects--Advertising, private contract, or county work permitted.
31-12-13      Large projects--Advertising or county work required--Rejection of bids.
31-12-14      Deadline for bids--Advertisement--Rejection of bids.
31-12-15      Written contract--Performance bond.
31-12-16      Progress payments permitted.
31-12-17      Superintendent's approval of bills before payment.
31-12-18      Width of culverts.
31-12-19      Repealed.
31-12-20      Repealed.
31-12-21      Purchase of maintenance equipment authorized.
31-12-22      Road and bridge fund used for equipment purchases--Maximum.
31-12-23      Temporary grading, repair work, or turnpiking operations.
31-12-24      Supervision of maintenance work by superintendent--Payments from road and bridge fund.
31-12-25      Establishment of witness corners required--Violation as petty offense.
31-12-26      Responsibility for secondary roads in unorganized territory.
31-12-27      Tax levy for secondary roads in unorganized territory.
31-12-27.1      Contracts with residents for county road construction and maintenance--Petition--Work performed by highway department or private contract--Payment.
31-12-28      Secondary county road construction by county--Petition--Election.
31-12-29      Notice and manner of election.
31-12-30      Ballot for election--Form.
31-12-31      Powers and authority of commissioners if county road proposition passes.
31-12-32      County funds available for secondary roads--Tax levy.
31-12-33      Township funds available for secondary roads.
31-12-34      Secondary township highway construction by county--Petition--Election.
31-12-35      Notice and manner of election--Ballot.
31-12-36      Powers and authority of commissioners if township highway proposition passes.
31-12-37      Return to township control--Petition and election.
31-12-38      County funds available for secondary highways--Tax levy.
31-12-39      Township funds available for secondary highways.
31-12-40      Accounting required of county highway superintendent--Allocation of township motor vehicle fund.
31-12-41      Contracts for county maintenance of streets and alleys in municipalities.
31-12-42      Vehicle license collections to be used outside municipalities.
31-12-43      Indemnity required for construction or survey work within road right-of-way.
31-12-44      Repairs for wind and water erosion assessed to private landowner.

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31-12-45      Approval of conservation district for repair of erosion damage--declaration--notice to landowner.
31-12-46      Minimum maintenance roads established.
31-12-47      Posting notification of minimum maintenance road.

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