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Lake Kittamaqundi Multiuse Trail Feasibility Study January 9, 2013

Consultants & Designers, Inc. “Integrating Engineering and Environment� 1321 Mercedes Drive, Suite A Hanover, Maryland 21076

Phone: (410) 694-9401 Fax: (410) 694-9405


Lake Kittamaqundi 

Site Features

• • • • •

28 acre lake Downtown Columbia Developed western shore Natural eastern shore Recent lake restoration – dredging, wetlands, peninsulas and forebay Existing one-mile hiking/biking trail


Project Goals    

Provide closed loop to increase interest and use of trail Enhance access to natural areas – eastern shoreline Provide vistas and panoramic viewing of lake Provide close connection to lake, wetland and forested areas Ensure trail is fully accessible – ADA compliant


Design Considerations 

Limit Environmental Impacts

• • • • 

Trail Use

• • • •

Wetlands Forest Floodplain Water Quality

Permittability

• • •

Community

• •

Federal State County 

Pedestrian Bikes ADA Compliant Maintenance

Goals Input

Cost


Alternate Alignments ď Ž

3 alternate alignments investigated to complete the trail (loop)


Alignment #1


Alignment #1 Existing Isthmus Trail on Eastern Shoreline

New paving on existing trails


Alignment #1 Lake Headwater Crossing Techniques

Footbridge across swale

Boardwalk through flood-prone area


Alignment #1 Existing Wooded Open Space on Western Shoreline

New paved trail – meander between existing trees


Alignment #1 Existing Gravel Trail at Western Shoreline Connection Point

New paved trail along existing gravel trail – no tree clearing needed


Alignment #1 Typical Footbridge and Paved Trail


Alignment #1 Key Considerations Existing Wetland Areas Along Western Shoreline

ď Ž

Alignment may have to be adjusted to avoid/minimize impacts


Alignment #1 Key Considerations Adjacent Residential Community

 

Minimum 120’ from residences New plantings will buffer views to the trail


Alignment #1 Alignment #1 Existing Trail to be Paved

1,800 LF

Bridge

36 LF

Boardwalk

90 LF

New Trail

670 LF

Total

2,596 LF

Length of Completed Loop

2.0 miles


Alignment #2

ď Ž ď Ž

Incorporates most features of Alignment #1 Provides upper lake crossing via boardwalk


Alignment #2 Boardwalk Across Lake Forebay


Alignment #2 Alignment #2 Existing Trail to be Paved

1,470 LF

Boardwalk

280 LF

New Trail

330 LF

Total

2,080 LF

Length of Completed Loop

1.8 miles


Alignment #3

ď Ž ď Ž

Incorporates short segment of Alignment #1 Provides bridge and boardwalk to cross the lake


Alignment #3

ď Ž ď Ž

Provides landmark bridge and unique lake viewing experience Provides boating access under the bridge


Alignment #3 Alignment #3 Existing Trail to be Paved

450 LF

Boardwalk

375 LF

Bridge New Trail

90 LF 100 LF

Total

1,015 LF

Length of Completed Loop

1.2 miles


Alternate Alignment Summary Length

Total Trail Length

Alignment #1

2,596 LF

2.0 miles

Alignment #2

2,080 LF

1.8 miles

Alignment #3

1,015 LF

1.2 miles


Project Costs

Design and Construction

Infrastructure Maintenance Costs

Alignment #1

$513,075

Alignment #1

$2,110/yr

Alignment #2

$644,925

Alignment #2

$4,520/yr

Alignment #3

$899,325

Alignment #3

$6,760/yr


Alignment #1 Summary 

 

Provides the longest trail (loop) around the lake – 2.0 miles Allows full access to the lake for maintenance Avoids impacts to wetlands Least costly


Alignment #2 Summary    

Provides substantial trail around most of the lake Creates additional separation from residential community Restricts access for maintenance of the uppermost lake Mid-cost option


Alignment #3 Summary 

 

Provides shortest trail around (through) the lake Creates unique landmark bridge and boardwalk crossing Provides architectural feature Spans entire lake and creates superior vistas Allows access to upper lake Provides new downtown destination Most costly


Conclusion Lake Kittamaqundi Multiuse Trail 

Three feasible alternatives with varying costs and benefits

• 

All alternatives satisfy project goals

Recommendation is to implement Alignment #1

• • •

Provides the longest trail Least environmental impacts – wetlands Least cost – design, construction and maintenance


Lake Kittamaqundi Multiuse Trail 

Questions

What’s Next?


Lake Kittamaqundi Multiuse Trail Feasibility Study