Heartland Express this month acquired Interstate Distributor Co., a Tacoma, Wash.-based trucking company, for about $113 million.

In a news release, North Liberty-based Heartland announced the purchase that will add 1,570 tractors — 220 of which are supplied by independent contractors — and 4,700 trailers to its fleet. Sarah Becraft, spokeswoman for Heartland Express, said in an email that after the purchase, the company now has about 5,000 employees.

“We are excited to add IDC’s high-quality drivers, experienced personnel, and strong customer base to Heartland’s operations,” said Michael Gerdin, chairman, president and CEO of Heartland, in the release, later adding that “Heartland will gain significant additional traffic density in the west, and our stronger eastern network will improve service for IDC’s customers in the east.”

Becraft said Heartland, a publicly traded company, is evaluating its employment needs, but there currently are no planned staff reductions.

The release said Heartland “expects to integrate IDC into Heartland’s existing operations and operate under the Heartland brand soon after” the sale. The release also said the company will spend the next 18 months consolidating overlapping Heartland and Interstate Distributor locations.

Areas with significant overlap, the release said, include the Seattle-Tacoma area, Oregon, southern California, Phoenix and Nashville. The release also said “numerous (Interstate Distributor) drop yards will no longer be needed” due to Heartland’s operation of 21 terminals across the U.S.

Heartland’s recent purchase is the company’s second major West Coast acquisition. In 2013, Heartland purchased Pacific, Wash.-based Gordon Trucking Inc. for about $300 million.

Reach Andy Davis at 319-887-5404 or at aldavis@press-citizen.com, and follow him on…