Lawrence motorists should soon expect to give their brakes an extra workout on a busy portion of 27th Street.

City commissioners at their Tuesday evening meeting gave final approval for two additional stop signs to be added to 27th Street between Iowa and Louisiana streets. The temporary stop signs are designed to help calm traffic, which has increased by about 6,000 cars per day since a portion of 31st Street has been closed as part of the South Lawrence Trafficway project.

Commissioners agreed to place stop signs at the intersection of 27th Street and Ridge Court and also where 27th Street intersects with the Naismith Valley Trail. City engineers said the new stop signs would be installed before Friday.

The stop signs are scheduled to be in place for 90 days. The city plans to remove the stop signs once the portion of 31st Street between Ousdahl Road and Haskell Avenue reopens, which is anticipated in mid-July or early August.

“Once that street reopens, we’ll take more traffic counts and talk with the neighbors again to see what might be needed,” said Chuck Soules, the city’s director of public works.

Commissioners have said they don’t envision the stop signs as being a permanent fix for any traffic issues along 27th Street, but they favored the solution for the immediate future because it was the quickest to implement.

Commissioners did approve a pair of longer-term projects for the 27th Street corridor. Commissioners unanimously agreed to spend $80,000 to build a new sidewalk along the north side of 27th Street west of Belle Haven Drive. Commissioners also agreed to spend up to $72,000 to build a new raised crosswalk with a pedestrian-activated beacon at the intersection of 27th Street and the Naismith Valley Trail. Both of those projects will be under construction this summer.

Soules said contractors will be instructed to move those projects to the top of their lists to ensure the work is completed before classes resume at nearby Broken Arrow Elementary and South Middle schools this fall.

In other news, commissioners:

• Unanimously deferred a request from the Lawrence-Douglas County Housing Authority to purchase a six-plex apartment building at 1725 New Hampshire St. Commissioners asked the authority to get an independent appraisal done on the property. The authority has proposed to purchase the building for $485,000. That is above the appraisal the county has on the property for tax purposes, but the Housing Authority has said it had to beat another offer from a competing buyer if it wanted to obtain the property. The authority determined that the price for the property was still reasonable, especially compared to how much it would cost to build a new structure of similar units.

• Unanimously approved approximately $860,000 in additional funding for the street maintenance program for 2015. City officials were facing the possibility of having to remove several projects from the approved street maintenance list because bids for work such as crack sealing, repaving, and curb and gutter repair were coming in about 15 percent higher than anticipated.