Transportation Surveys
South Country Club Road Improvements, Decatur, Illinois
Chastain was selected to perform a Phase I study and Phase II re-design of a 0.9 mile two lane section of South Country Club Road from US Route 36 to Lost Bridge Road. This section of roadway is a low speed meandering street which passes through Decatur Park District property, the Children's Museum, the Decatur Zoo, residential homes, and the E. J. Muffley Grade School. This section also runs adjacent to Lake Decatur on the west. This roadway is heavily traveled and Macon County needed an improved and safer route. Chastain studied this section of roadway and designed it to be a two lane urban section with curb and gutter. The project will maintain the existing meandering geometry to maintain low traffic speeds and reduce land acquisition needs. The project will also provide for a 10 foot width pedestrian path to improve safety for pedestrians by providing them a separate facility from the roadway which they currently share in some areas. The pedestrian path will be separated from the roadway by a four foot buffer to increase safety. The path will diverge from this offset along Lake Decatur in some areas and through Decatur Park District property. Chastain is working closely with the Park District to design this feature to maximize its potential use for the community. Survey work performed included horizontal and vertical controls, topographic survey, research, and preparing Right-of-Way documents.
Wheeler Road over Otter Creek Bridge, Winnebago County, Illinois
Chastain provided Phase II design engineering services and Phase III construction engineering services for the replacement of an existing 60 year old, 3 span, cast in place concrete structure with a twin 3-sided box structure on pile supported footings with cast in place wing walls. Scope of work included hydraulic modeling of structure and water course using HEC-RAS, design of roadside ditch, and preparation of construction plans, specifications, quantities and cost estimates. Chastain gathered alignment, cross-sections, topographic survey for the roadway in the vicinity of the bridge along with stream and floodplain surveys as required to prepare and complete the IDOT Hydraulic Report in accordance with the IDOT BLR Manual. Chastain submitted an Environmental Survey Request to IDOT BLR in accordance with BLR Circular #2000-10. Chastain facilitated IDNR coordination on behalf of Winnebago County. Project was funded by STP funds.