ST-23-08: Route 277/I-81 Interchange (Exit 307) - Town of Stephens City/Frederick County

ST-23-08 Overview Map

From US Route 11 (Main St.) to Route 1085 (Stickley Dr.)

Project Purpose

The focus of this study is to assess key areas of the Route 277/I-81 Interchange, Exit 307. This corridor has locations in need of safety improvement as well as identified operational issues during peak hour periods. The interchange area will be studied to determine key safety hot spots or patterns as well as assess traffic delays and queues to develop possible alternatives.  Innovative intersections and interchange configurations as well as multimodal/accessibility improvements may be considered to accommodate future growth.

Study Partners

  • Frederick County
  • Town of Stephens City
  • WinFred Metropolitan Planning Organization (WinFred MPO)
  • ATCS, PLC

Key Points of Contact

District Lead: Brad Reed

Lead Consultant: Nathan Umberger

Schedule

PHASE DATES TASKS
Phase 1 May - August 2023 Diagnose Problems/Conduct Initial Public Outreach/Brainstorm Alternatives
Phase 2 September 2023 - May/June 2024 Evaluate Preliminary Alternatives/Conduct Public Outreach and Obtain Feedback/Select Preferred Alternatives
Phase 3 June-July 2024  Conduct Risk Assessment/Develop and Refine Preferred Alternatives/Prepare Cost Estimate and Investment Strategy

Study Documents

The Phase 1 survey regarding potential transportation safety, operations, and multimodal/accessibility improvements at the Route 277/I-81 Interchange (Exit 307), between US Route 11 (Main St.) in Stephens City and Route 1085 (Stickley Dr.) in Frederick County is complete.

Dates Number of Participants (unique individuals)
June 29-July 21, 2023 1,054

 

The following needs have been identified for this study. Do you agree with this initial assessment?
Congestion Mitigation 95%
Safety 75%
Transportation Demand Management 49%
Bike & Pedestrian Access 41%

 

Rank what is the most important issue to you along the study area.
Reducing Traffic Congestion 93%
Corridor Safety / Intersection Safety  69%
Pedestrian Safety and Accessibility 56%
Proper Pavement Marking and Signage 56%
Speeding / Aggressive Driving 53%
Bicycle Safety and Accessibility 49%
Public Transit Access and Service 50%

 

Which of the following safety issues concern you?
Sudden Stopping / Rear-end Crashes 54%
Running Red Lights 49%
Difficulty Weaving / Merging 45%
Speeding / Aggressive Driving 39%
Lack of Sidewalks / Missing Sidewalks 32%
Insufficient / Missing Crosswalks and Pedestrian Signal Timing 32%
Inadequate Pavement Marking and Signage 27%
Side-Impact Crashes 25%
Inadequate Lighting 17%
Inadequate Bicycle Facilities  13%
Other 11%
Closely Spaced Driveways 10%
Lack of ADA Ramps and Accessibility 8%
Inadequate Transit / Bus Stops 6%

 

What mobility issues do you typically experience when using the study area?
Poor Signal Coordination 67%
Difficulty Making Left Turns 66%
Vehicles Blocking Entrances 59%
Difficulty Accessing Businesses 52%
Lack of Turn Lanes 44%
Difficulty When Walking 10%
Difficulty When Riding a Bike 8%
Other 5%

 

What mode(s) of travel do you use when traveling along the study area?
Personal Vehicle 99%
Walking 9%
Cycling 6%
Truck or Commercial Vehicle 5%
Other 2%
Carpool / Vanpool 1%
Taxi / Uber / Lyft 1%
Metro Bus, Local Bus, or Commuter Bus 1%

The Phase 2 survey regarding potential improvements at the Route 277 (Fairfax Pike)/I-81 Interchange (Exit 307), between US Route 11 (Main St.) in Stephens City and Route 1085 (Stickley Dr.) in Frederick County is complete.

Dates Number of Participants (unique individuals)
May 20 – June 4, 2024
873


Future Bridge Configuration Alternatives
 

Several alternatives were explored for the future configuration of the Route 277 bridge over I-81 as part of the congestion mitigation and safety improvement process. The following three primary alternatives were initially investigated:

  • Alternative 1: Four-lane bridge with a roundabout at the I-81 northbound ramps
  • Alternative 2: Four-lane bridge with a traditional diamond interchange
  • Alternative 3: Five-lane bridge with a traditional diamond interchange

Two scenarios for Alternative 3 were explored in further detail - Alternative 3A and Alternative 3B. The shared design features for Alternatives 3A and 3B include:

  • A dedicated westbound left turn lane at Main Street
  • Traffic signals remain in place at both I-81 ramps
  • Dual eastbound through lanes starting at the southbound off-ramp intersection
  • Dual northbound off-ramp right turn lanes
  • Dual southbound off-ramp left turn lanes
  • Free flow right turn lane from Fairfax Pike to the I-81 North on-ramp
  • Sidewalk on both sides of the bridge

The bridge alignment and overall design have not been finalized.

Alternative 3A

The unique design feature of Alternative 3A is the lane configuration on the bridge.

  • In the eastbound direction, there are two through lanes and one left turn lane.
  • In the westbound direction, there is one through lane and one left turn lane.

Alternative 3B 

The unique design features of Alternative 3B include:

  • The lane configuration on the bridge - two through lanes and one left turn lane in each direction.
  • The prohibition of left turns from Fairfax Street onto Mulberry Street.
  • Two westbound through lanes on Fairfax Street between Main Street and the I-81 South off-ramp.

Please rate Alternatives 3A and 3B on a scale of 1 to 5.

  1. Strongly oppose 2. Somewhat oppose 3. Neutral 4. Somewhat support 5. Strongly support
Alternative 3A - Traditional Diamond (5 Lane Bridge) with two through lanes and one left turn lane in the eastbound direction; and one through lane and one left turn lane in the westbound direction
12%
12% 17% 33% 25%
Alternative 3B - Traditional Diamond (5 Lane Bridge) with two through lanes and one left lane in each direction on the bridge; a left turn prohibition on Fairfax Street at Mulberry Street; and two westbound through lanes on Fairfax Street between Main Street and the I-81 South off-ramp
13%
7% 9% 19% 53%

 

Last updated: July 10, 2024

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