The letting of contracts under this Chapter for the following types of projects shall not be subject to the licensing requirements of Article 1 of Chapter 87 of the General Statutes:
(1) Routine maintenance and minor repair of pavements, bridges, roadside vegetation and plantings, drainage systems, concrete sidewalks, curbs, gutters, and rest areas.
(2) Installation and maintenance of pavement markings and markers, ground mounted signs, guardrail, fencing, and roadside vegetation and plantings.