Eastern Sierra Engineering has completed an expansion of its Reno office to more encompass more than 5,300 square feet.
The office is at 4515 Towne Drive near U.S. 395 in the Steamboat area.
The expansion doubled laboratory space used to test paving materials, increased the size of the production area and allowed for private offices.
The company also operates offices at Minden and Zephyr Cove.