Pavement patch work began this week in the Sammamish Summer Ridge neighborhood.

Though the schedule is subject to change, the patching began July 11 and will likely continue through the week of July 18, according to a city press release.

“After problematic areas are patched, a new layer of pavement will go down later in the week,” according to the city.

This work is part of a larger pavement overlay project, which the Sammamish City Council approved in early May when it unanimously awarded a $150,500 contract with KBA Consultants Inc., as well as another $15,000 in reserve funding.

Other projects for this year include work in the Inglewood Glen, Demery Hills, Eden View, Waverly Hills, Pinebrook Meadows and Klahanie neighborhoods.

“This is the first time we’re going into Klahanie,” City Engineer Andrew Zagars said.

When the city annexed the roughly 2-square-mile area Jan. 1, it said it would slowly bring Klahanie streets up to current city code using funds gained through the annexation.

“It won’t be overnight. It’ll be over a series of years as we integrate them,” City Manager Lyman Howard said May 3. “We don’t want to let their roadway get down to … where we will have to do a rebuild.”

The pavement overlay program within the city began in 2009. Before that, the city partnered with King County, contributing around $500,000 a year to road improvements.

In all, the city’s made more than 70 miles of surface roadway improvements since 1999, Zagars said.

The city can extend the life of its roads two or three times over through the overlay program, and it is far cheaper than having to replace the road, Zagars said.

The City Council decided to up the city’s financial commitment to maintaining its road systems in 2013, increasing annual spending to $3 million per year.

The entire 2016 pavement management budget is $3.75 million.

This year’s budget is slightly larger than previous ones due to sidewalks.

Revised regulations from the Department of Justice require the city to install ADA accessible ramps at crosswalks if the city does an overlay project where there are insufficient ones, Zagars said. This regulation increases the total amount the city spends on its overlay project.

“We’re working in a lot of neighborhoods that have sidewalks but their ramps were built prior to 2010. So we’re having to bring them up to the new standards,” Zagars said. “That does add a lot of cost to our overlay project.”

The city has about 192 miles of roadway to maintain, including the 25 miles the city gained after the Klahanie-area annexation.

Non-Klahanie roads have “good” ratings. Mostly local roads are weighing down the over rating within the city.

Klahanie did not have ratings for its roads during the city presentation. But the city began to “analyze and map out every crack in every roadway” throughout all of Sammamish in June using a van equipped with lasers that scan the roadway, Zagars said.

Prior to this van, city staff personally walked the streets to identify problem areas.

The 2017 pavement overlay projects will be based on these new ratings. The roadways will be re-examined in 2020.

In 2018, the city will reassess its arterials, which it does every four years.