Ind. Code § 9-21-4-12
(b) The Indiana department of transportation may determine that a bridge, a culvert, or an approach to a bridge or culvert on a state highway does not have sufficient clear roadway width to safely permit the passing of two (2) vehicles. A bridge or culvert described in this subsection shall be designated a one-lane bridge or a narrow bridge.
[Pre-1991 Recodification Citation: 9-4-1-70(a); (b).]
As added by P.L.2-1991, SEC.9.