Over the Horizon Radar (OTHR) Infrastructure

PROGRAM Notification

For Construction Manager at Risk (CM@R) under Other Transaction (OT)

Project: Over the Horizon Radar (OTHR) Infrastructure, Oregon

The U.S. Army Corps of Engineers (USACE) is issuing this notice to industry that this requirement will be solicited for preconstruction services and construction of the OTHR infrastructure using Construction Manager at Risk under 10 USC 2808a Other Transaction for Construction. This notice is provided for informational purposes to allow interested parties to be aware of the change in strategy.

Project Overview

Project Title: OTHR Infrastructure

Location: Oregon

Agency: USACE, Kansas City District (NWK)

NAICS Code: 236220-Commerical and Industrial Building Construction

Project Description

This OTHR system requires two sites, a Transmitting site and a Receiver site, located approximately 125 miles apart that are interdependent and must be executed concurrently.  The sites are remotely located and positioned to monitor the United States’ Northwest approach corridor.

Transmitting Site Requirements:

Besides clearing and grading a little over 2 square miles for the antenna arrays, the following are also required:

Operations Facility, Pre-Engineered Building (PEB) on slab, 10,787 SF

Server Room, workshop, office area, restroom, comm room, break room, logistics room, mechanical room, electrical room
EMI shielding in comm room, EMI shielding for UPS (located in electrical room)
160 SF UPS Battery Shelter
Electric, comm, water, sewer (septic system) utilities


Water Treatment Building, PEB on slab, 1,323 SF

Fire water storage tank required, commercial off the shelf
Potable water storage tank required, commercial off the shelf
Connect to water well (well installed by others)
Treatment system for potable water


Vehicle Maintenance Shelter, PEB on slab, 1,600 SF

One 12’x12’ garage door
No heating
Electric and water utilities


Vehicle Storage Shelter, PEB on slab, 2,450...