Gordon’s Creek Park

Technical Analysis

 The following sections include a technical analysis of the Gordon’s Creek Park Conceptual Development Plan. The analysis includes preliminary cost  estimates for each district of the plan, a maintenance plan for the linear park, a list of potential funding sources, an overview of permitting requirements, typical sections for bridge crossings, and identification of detention opportunities.

 Gordon's Creek Park Plan

Site Analysis

Gordon’s Creek is a part of the Pascagoula River Basin. It is a tributary of the Leaf River and can be found in the Lott’s Creek sub basin.  The creek flows from its origin east through many historic neighborhoods and Downtown Hattiesburg. Gordon’s Creek discharges into the Leaf River south of the Bouie River.

Hattiesburg was founded in 1884 and grew with other settlements in the region during the  timber boom. The City has continued  to grow with construction  of major hospitals, universities and several other commercial and industrial opportunities.  The development of commercial and residential land uses on the banks of Gordon’s Creek has lead to erosion and initiated several restoration on projects to protect the banks from additional deterioration.  Bank stabilization methods vary in each section of the creek from loose riprap, concrete riprap, gabions, loose concrete and formed concrete banks.  Very little of the project area has banks in a natural vegetative state.  It is the goal of this project to restore some of the banks to a more natural state while still protecting the banks from further erosion.

The Gordon’s Creek Park generally follows the banks of Gordon’s Creek.  The linear park drops into the creek bank to create several “creek bank crossings”. The crossings allow users to get a better view of the creek and add interest to the pathway. These creek bank crossings can be found beneath two railroad trestles,  five bridge crossings and along Town Square Park.The proposed design for the creek bank crossings include pedestrian bridges and pathways terraced into the banks. Gordon’s Creek Park also veers away from the creek bank to provide connectivity to nearby destinations, sidewalks and trails.

The location of the linear park is generally located in the 100 year floodplain of Gordon’s Creek.  Since Gordon’s Creek is listed as a  flood hazard by the City of  Hattiesburg’s Floodplain Management Program, construction inside the  floodplain should be limited to prevent damage during  flood  events. The park primarily consists of sidewalks, lighting, signage, and other amenities associated with a pedestrian/bicycle-path. In locations where structures are proposed, consideration must be given to locating these facilities outside the 100 year floodplain.

 

Property Analysis

Gordon’s Creek Park is located primarily on city owned property. The park utilizes city easements along Gordon’s Creek to locate the multi-use trail and amenities.   Detention areas associated with the path are proposed on city owned property and on private property. The technical assessment  identified additional opportunities for detention that allowed for larger detention areas.  During  final design, a determination will have to be made as to the appropriate location of  detention areas based on availability of land and volume of detention required.  Easements will also have to be acquired to locate the path beneath the Canadian National (CN) and Norfolk Southern (NS) rail line.  These easements will be further discussed under the permitting section of this technical analysis.

The detention areas identified in the conceptual plan are generally located in existing drainage ways. During the technical analysis, opportunities for detention were identified along Gordon’s Creek. Opportunities were identified by ownership, availability, location and size.  City owned parcels found in low lying areas that were primarily vacant were initially identified for detention.  In addition to the physical characteristics associated with these parcels, these areas we real so considered ideal for detention because no property acquisition was required.  Other low lying, vacant parcels were identified and reviewed to determine potential for detention.

 

Preliminary Cost Estimates

The cost analysis provided in the next sec on is broken down by districts and is based on the conceptual plan prepared in 2011. The conceptual cost estimate includes projected costs for site work, path construction, landscaping, irrigation, site amenities, signs, and lighting and electrical.  The cost estimate also provides a general cost estimate for land acquisition, stream bank restoration and detention ponds where utilized.  A more detailed cost analysis should be developed once final design is complete.

Since the Engineer has no control over the cost of  labor, materials, equipment or services furnished by others, or over the Contractor’s methods of determining prices, or over competitive bidding  or market conditions, the Engineer’s opinions of probable Construction Cost provided in this analysis are to be made on the basis of experience and qualifications and represent the Engineer’s best judgment as an experienced and qualified professional, generally familiar with the construction industry; but the Engineer cannot and does not guarantee that proposals, bids or actual Construction Cost will not vary from opinions of probable cost prepared by the Engineer.

 

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