This issue contains 15 papers on the subject of transportation infrastructure maintenance and preservation. Specific topics discussed include the following: performance-based road maintenance contracts; equipment replacement at state departments of transportation; optimal timing and preventive maintenance of pavements; pavement preservation; thin surface treatments for bituminous pavements; chip seals; hot-poured crack sealants; structural health monitoring of bridges and tunnels; fiber-reinforced polymer systems in concrete; fiber-reinforced polymer pile repair incorporating cathodic protection; and the failure and repair of a deck closure pour on Interstate 81.