Picayune Strand Restoration Project, US41 and CR92 Conveyance Features

The principal intent of this project is to provide hydraulic connectivity through the addition of new culverts under or adjacent to existing US Route 41(US41) and existing County Road 92 (CR92/San Marco Dr.) in Collier County. Culverts under US41: Three new double barrel 12 foot wide by 5 foot high concrete box culverts will be located under US41, approximately 1,000-feet southeast of the intersection of US41 and Tomato Road. The exact location of the culverts shall be determined during design, with a minimum and maximum range of 80 to 130 feet between centerline of culvert locations. The three culvert locations will create new hydraulic openings for conveyance from the Tamiami Canal to the south side of US41. Culvert barrels will not require skews. The culvert invert elevation is -1.5 feet NAVD88. The preliminary estimated length of culvert barrel is approximately 70 feet based on preliminary hydraulics, however maintenance of traffic and phased construction may control culvert length. The required culvert length and wingwall geometric configuration shall be determined during design minimally based on existing roadway cross section including survey, proposed grading and safety requirements. Vehicular, two-lane, two-way, and pedestrian access shall be maintained at all times during construction in the maintenance of traffic plan. US 41 is an evacuation route. Culverts shall be considered bridge-sized culverts and require load rating in accordance with FDOT requirements. The limits of construction including any approach construction are from Sta. 810+00 to 837+00. Maintenance of traffic may extend beyond these limits. All construction for maintenance of traffic must be removed at the end of the project and the original grades restored. Culverts parallel to US41: Three existing 36” HDPE pipe culverts are located in the Tamiami Canal parallel to US 41. Culverts are on the north side of US 41 and approximately 400 feet southeast of the intersection of CR92 (San Marco Rd.) at US41. Existing culverts are located under a driveway, allowing ingress and egress to the adjacent residents at 20201 Tamiami Trail East, which is located within Collier-Seminole State Park. Existing culverts shall remain and an additional 36” culvert shall be added adjacent to the existing culverts with an invert elevation of -0.5 feet NAVD88. Work shall include maintenance of traffic for ingress/egress property access at all times during construction. Appropriate safety features shall be provided where clear zone requirements cannot be met and may include but not be limited to new barriers and guardrail. Culvert shall be provided in accordance with Florida Department of Transportation Standard Specifications for Road and Bridge Construction Section 430 Pipe Culverts. Culvert under CR92 (San Marco Drive): One new double barrel 10 foot wide by 3 foot deep concrete box culvert will be located under County Road 92 (San Marco Drive), approximately 2,400-feet west of the intersection of CR92 at US41. The new culvert will create a hydraulic opening for conveyance between the north and south sides of CR92. Culvert barrels will not require skews. The preliminary estimated length of culvert barrel is approximately 110 feet with an invert elevation of 0.0 feet NAVD88. The required culvert length and wingwall geometric configuration shall be determined during design minimally based on existing roadway conditions, survey, proposed grading and safety requirements. Vehicular, one-lane, one-way, access shall be maintained at all times during construction in the maintenance of traffic plan. CR92 is an evacuation route. Culvert shall be considered a bridge-sized culvert and requires load rating in accordance with FDOT requirements. The limits of construction including any approach construction are from Sta. 558+00 to 578+00. Maintenance of traffic may extend beyond these limits. All construction for maintenance of traffic must be removed at the end of the project and the original grades restores. - Signing and pavement marking is the responsibility of the Design-Build Firm

Division 31 -	Earthwork, Erosion and Sedimentation Controls.
Division 33 -	Utilities, Storm Drainage Utilities, Culverts, Ponds and Reservoirs.
Division 35 -	Waterway and Marine Construction, Shoreline Protection, Waterway Construction and Equipment.