B09_Solicitation_Amendments_-_updated_drawings_0001.pdf

This document is a set of construction drawings for trail improvements at the Mile Creek Stone Bridge area within Grand Portage National Monument in Minnesota, prepared by the National Park Service, Department of Interior, Midwest Regional Office.

The project encompasses multiple improvement areas including protection and removal plans, asphalt pavement layout and marking, surface restoration and erosion control measures, and general site conditions with contractor staging areas. Key construction elements specified include protection of existing stone bridge members (identified as P1-P12), removal of existing asphalt, stone walls, pavement, and other structures (identified as R1-R12), and construction of new asphalt pavement surfaces with associated drainage and accessibility features. The drawings detail silt fence installations, erosion control blanket systems, permanent pavement marking specifications with dimensional requirements, accessible sign and bollard details, and surface restoration with topical requirements. Contractor staging areas are designated with specific notations regarding equipment storage, material placement, parking restrictions, and environmental protection measures. The plans specify protection of existing Grand Portage Bay views, management of storm water drainage, and compliance with park access requirements. Drawing sheets include general conditions and contractor staging maps (CO.1), protection and removal plans (CO.1-CO.3), pavement layout and marking details (C1.1-C1.3), and surface restoration and erosion control plans (C2.1-C2.3), with all drawings dated April 23, 2024.