Santa Monica city officials will consider a 10-year, $92 million plan to add as many as 1,900 city center parking spaces and shore up existing downtown parking structures.

The plan, to be considered by the Planning Commission and City Council in the coming months, would mean an overhaul of six existing municipal parking structures serving the Third Street Promenade, as well as two new 500-car parking structures on Fifth Street between Colorado Avenue and Wilshire Boulevard.

Ellen Gelbard, assistant director of planning and community development, said a parking task force was convened earlier this year to explore ways to expand parking capacity while existing parking was retrofitted for seismic resistance. The proposal coincides with plans to expand by 250 spaces parking at the Santa Monica Public Library.

The recommendations call for retrofitting the city’s three nine-story parking structures and demolishing the three, six-story structures. The demolished structures would be rebuilt to nine-stories, with a ground-floor retail component, Gelbard said. The new construction would increase capacity by 712 spaces.

Money to carry out the 10-year plan, which has a clause requiring review every two years, would come from multiple sources, Gelbard said. Parking meter fees could be raised from 50 cents per hour to $1 and the length of free parking would be reduced from two hours. There also is money available from the Federal Emergency Management Agency for seismic retrofitting, and a $2.5 million balance in the Bayside District’s in-lieu fund. The Bayside District is the nonprofit organization that oversees Third Street Promenade.

Mayor Michael Feinstein said that while the planning commission is likely to focus on the impact of additional parking on traffic, the Council would likely question the funding.

Former Planning Commissioner Frank Gruber, who now writes a column for the online city newspaper The Lookout, said two new structures on Fifth Street would only encourage increased traffic.

Gruber also was skeptical of financing. He said it remains to be seen what effect an increase of parking fees would have on demand, which could undermine the financial picture.

Feinstein said increasing the boundaries of the walkable downtown area will better distribute foot traffic, which would have the effect of controlling skyrocketing rents on the Promenade that have forced restaurants and local retailers off the mall.