Lafayette Street Phase II Corridor Improvements

> Lafayette Street Phase II Corridor Improvements

Lafayette Street Phase II Corridor Improvements

Lafayette Street Phase II Corridor Improvements

Client: Leon County Board of County Commissioners
Location: Leon County, FL
Size: 0.6 miles
Service: Transportation & Mobility

Highlights:
Contact Staff: James P. Sullivan, P.E.
 

Lafayette Street is considered one of the oldest roadway corridors in Tallahassee. This Phase II portion of the project, from CSX Railroad to east of Seminole Drive, is one segment of the historic roadway that provided a connection from the City’s original capitol building to the City of St. Augustine. A railroad bridge was constructed at the west end of the project in the late 1920’s and the roadway was excavated in order to pass under the bridge. This created a severe roadway grade and steep embankments on each side. Originally a dirt road, Lafayette Street was converted to concrete pavement and curbing in the 1930’s. Over time, the concrete pavement developed severe cracking and began breaking apart. Numerous asphalt overlays were applied over the last twenty five years, however the concrete cracking continued and the cracks quickly reflected through the overlays.

The primary purpose of this stormwater project was to improve the stormwater collection and conveyance system and reduce flooding. The existing system, which consisted primarily of two catch basins at the railroad bridge, could not accommodate the stormwater runoff that accumulated within the roadway. The result was frequent flooding and on-going deterioration of the roadway. A completely new stormwater system was installed throughout the project limits. The system include drainage inlets, edge drains, conflict manholes and ditch bottom inlets for collecting runoff from each contributing area. It also includes a continuous stormsewer trunk line that connects to the new Cascades Park stormsewer system. The system consists of concrete piping ranging from 18" diameter up to 36" diameter.

During the design phase, other improvements were deemed necessary, including:

  1. An expanded pedestrian pathway, originally planned to be 5’ wide, which was widened to 8’ with decorative scoring, to accommodate businesses and residential access and provide a continuous connection from Myers Park to Cascades Park.
  2. Removal of the existing concrete roadway, along with unsuitable soils, and replacement with select backfill, limerock base and new asphalt pavement.
  3. Sharrows to accommodate bicycle traffic from the nearby Cascades Park and to provide bicycle access to transit stops along the corridor.
www.GenesisGroup.com

Lafayette Street Phase II Corridor Improvements


Leon County, FL

Client:

Leon County Board of County Commissioners

Location:

Leon County, FL

Size:

0.6 miles

Service

Transportation & Mobility

Highlights:

Roadway Design
Sidewalk Design
Stormwater Analysis and Solutions Design
Streetscape Design

Contact Staff:

James P. Sullivan, P.E.

Lafayette Street Phase II Corridor Improvements

Lafayette Street is considered one of the oldest roadway corridors in Tallahassee. This Phase II portion of the project, from CSX Railroad to east of Seminole Drive, is one segment of the historic roadway that provided a connection from the City’s original capitol building to the City of St. Augustine. A railroad bridge was constructed at the west end of the project in the late 1920’s and the roadway was excavated in order to pass under the bridge. This created a severe roadway grade and steep embankments on each side. Originally a dirt road, Lafayette Street was converted to concrete pavement and curbing in the 1930’s. Over time, the concrete pavement developed severe cracking and began breaking apart. Numerous asphalt overlays were applied over the last twenty five years, however the concrete cracking continued and the cracks quickly reflected through the overlays.

The primary purpose of this stormwater project was to improve the stormwater collection and conveyance system and reduce flooding. The existing system, which consisted primarily of two catch basins at the railroad bridge, could not accommodate the stormwater runoff that accumulated within the roadway. The result was frequent flooding and on-going deterioration of the roadway. A completely new stormwater system was installed throughout the project limits. The system include drainage inlets, edge drains, conflict manholes and ditch bottom inlets for collecting runoff from each contributing area. It also includes a continuous stormsewer trunk line that connects to the new Cascades Park stormsewer system. The system consists of concrete piping ranging from 18" diameter up to 36" diameter.

During the design phase, other improvements were deemed necessary, including:

  1. An expanded pedestrian pathway, originally planned to be 5’ wide, which was widened to 8’ with decorative scoring, to accommodate businesses and residential access and provide a continuous connection from Myers Park to Cascades Park.
  2. Removal of the existing concrete roadway, along with unsuitable soils, and replacement with select backfill, limerock base and new asphalt pavement.
  3. Sharrows to accommodate bicycle traffic from the nearby Cascades Park and to provide bicycle access to transit stops along the corridor.