The extreme heat this summer meant changes to the mixture of emulsion and harder materials, but it did not otherwise affect the process, DeGiacomo said. The mixture cures after about 45 minutes, so traffic disruption is minimal.
The city has micro surfaced about 70 lane miles so far during the warm months and should finish another 30 by the end of next month.
Streets that have been micro surfaced this year include the Broadway Extension service roads, Britton Road from the extension to Kelley Avenue, Lake Stanley Draper Drive and Pennsylvania Avenue between SW 104 and SW 89, said Tim Ishmael, the city's unit operations supervisor of street maintenance.
Pennsylvania eventually will be resurfaced all the way through SW 44, he said.
The program's first year was 2002.