Intermountain Slurry Seal, Inc.

Intermountain Slurry Seal, Inc., a subsidiary of Granite Construction Incorporated, is a federal pavement preservation contractor operating as a prime on the Federal Highway Administration's Western Regional Pavement Preservation multiple-award MATOC and on related FHWA delivery orders across 13 western states, with no set-aside designations across its prime footprint. The company delivers asphalt milling, paving, patching, crack sealing, microsurfacing, and slope stabilization on federal lands highways and national park roads, with headquarters in Salt Lake City, Utah.

Intermountain Slurry Seal operates as a prime contractor on 92% of recent awards (47 of 51 awards). Its customer concentration is extreme: 94% of awards and $626.4 million of its combined potential value across all awards derive from the Federal Highway Administration, with three awards from the Department of the Navy Pacific Fleet Forces (place-of-performance at Naval Air Station Fallon, Nevada for basewide pavement maintenance and slurry seal work) and one each from the National Park Service and Occupational Safety and Health Review Commission. The Western Regional Pavement Preservation MATOC, a five-year, $240 million multiple-award contract awarded November 1, 2023 with completion through October 31, 2028, has generated three task orders totaling $27.7 million: a $16.65 million delivery order issued February 27, 2026 for pavement preservation in Oklahoma and North Texas with completion October 24, 2026; a $7.31 million delivery order issued February 1, 2024 for Colorado pavement preservation and fire-damage erosion control with completion May 8, 2026; and a $3.76 million delivery order issued January 26, 2024 for pavement preservation at multiple national parks across Washington, Idaho, and Montana with completion July 1, 2024. Three earlier FHWA delivery orders (now closed out) totaled $16 million across Big Bend National Park, Theodore Roosevelt National Park, and North Cascades National Park work performed 2021–2022.

Intermountain Slurry Seal also holds positions on four other FHWA indefinite delivery contracts (DTFH6812D00005, DTFH6813D00003, and 69056718D000005), with a combined 27 task orders totaling $98.7 million in potential value. In its subcontractor capacity, the company performs slurry seal and asphalt patching work for Defense Base Services, LLC at Naval Air Station Fallon (four sub-awards issued April–September 2025 for basewide roads, parking lots, and crack fill). On SCI-reportable federal service contracts above the $150,000 threshold, invoiced revenue totaled $9.1 million in fiscal year 2024 across 8.6 FTEs, with median government-paid rates around $271/hr and sub-hours comprising 15% of contractor hours across prime contracts. Activity has been light in recent fiscal years (one award in 2026, three in 2025, three in 2024, one in 2023, two in 2022), with only one award ($16.65 million, the February 2026 Oklahoma-North Texas pavement work) reaching ultimate completion within the next twenty-four months, representing a sharp recompete cliff in late 2026.