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HomeMy WebLinkAboutDiscussion Item Oshkosh Ave & SawyerTO:City of Oshkosh Redevelopment Authority FROM:Allen Davis, Community Development Director DATE:February 22, 2017 SUBJECT:Discussion Item: Oshkosh Avenue and Sawyer Street Intersection Traffic Impact Analysis Discussion Item: Oshkosh Avenue and Sawyer Street Intersection Traffic Impact Analysis The RDA has acquired several properties along Oshkosh Avenue and Sawyer Street intersection for future reconstruction of the intersection. A Traffic Impact Analysis (TIA) was completed for the Oshkosh Avenue Corridor, east of Interstate 41 and west of the Fox River. The TIA identified alternatives for reconstruction of intersections along Oshkosh Avenue as shown in the handout.The TIA identifies 3 reconstruction alternatives for the Oshkosh Avenue/Sawyer Street intersection. The alternatives for the intersections may be selected at the February 27th Council meeting.Staff will update the RDA at the meeting. Meeting Handouts Oshkosh Avenue Area Traffic Impact Analysis   City of Oshkosh       January 30, 2018 5:30 PM City of Oshkosh City Hall 215 Church Avenue Oshkosh, WI 54901 Study Background The City of Oshkosh is completing a Traffic Impact Analysis (TIA) to evaluate the impacts of redevelopment along Oshkosh Avenue between N. Washburn Street and the Fox River. The proposed developments and the additional traffic that is anticipated will alter current traffic conditions. The TIA will include traffic data collection, analysis of existing and projected traffic volumes, and evaluation of Oshkosh Avenue corridor and intersection alternatives to accommodate future traffic conditions. The project evaluates corridor alternatives from N. Koeller Street to the Fox River and evaluates three intersections along Oshkosh Ave: N. Koeller Street, N. Westfield Street, and N. Sawyer Street as well as determining operational impacts to the I-41 interchange. Purpose of Meeting The purpose of this meeting is to review the corridor and intersection alternatives considered along Oshkosh Avenue and provide an opportunity for input from City of Oshkosh citizen boards and the Common Council. The provided attachments include the corridor and intersection alternatives that were considered as part of this project, along with a discussion of the advantages and disadvantages of each alternative evaluated. Future Development The proposed development near Oshkosh Avenue includes a new Oshkosh Corporation Global Headquarters that will be built on a portion of the existing golf course. In addition, redevelopment along Oshkosh Avenue for commercial uses is anticipated in the next couple of years. These new developments will impact existing operations along the Oshkosh Avenue corridor and will include new roadway connections to the north. This includes the extension of N. Koeller Street north of the roundabout and the addition of a north leg to the N. Westfield Street intersection. To develop future traffic volumes for the corridor, our team has projected trip generation patterns for the redeveloped properties and assigned new trips to the transportation network based on accepted industry practices. We have coordinated our efforts with the East Central Wisconsin Regional Planning Commission (ECWRPC) to establish appropriate background conditions for a 30-year outlook analysis. Traffic Analysis Traffic modeling for all intersection alternatives is being completed for the AM and PM peak time periods for existing conditions, development completion, and 30-year outlook. In addition to operations, alternatives were evaluated based on other performance measures including safety, access, and other feasibility considerations to determine the preferred corridor and intersection alternatives along Oshkosh Avenue. Proposed development near or along Oshkosh Avenue  Oshkosh Avenue Corridor Alternatives                                                                        Oshkosh Ave Corridor Typical Section Alternatives   Operations  Advantages   Sufficient capacity for through  vehicles.  Disadvantages   No separate left‐turn lanes.  Through vehicles are delayed by  left‐turn vehicles.   Poor lane utilization, which  results in issues downstream.  Feasibility  Advantages   Low cost    Fits in existing right‐of‐way.  PERFORMANCE MEASURES  Safety  Disadvantages   Higher potential of rear‐end,  angle, and head‐on crashes.   Vehicle speed differential.   Higher number of conflict points.  No terrace between roadway  and sidewalk.   More difficult for pedestrians to  judge gaps when crossing.  Access  Advantages   Provides full access to all  roadways and driveways along  corridor.  Disadvantages   No refuge for a two‐stage  crossing.      Disadvantages   Sidewalk does not meet ADA requirements.   Provides minimal space for snow removal.  Minimal opportunity for streetscape improvements. 1 Oshkosh Ave (STH 21) just east of N. Westfield St ‐ looking west Oshkosh Ave (STH 21) just west of N. Sawyer St ‐ looking west                                                                  Oshkosh Ave Corridor Typical Section Alternatives   Operations  Advantages   Sufficient capacity for through  vehicles.   Left‐turn lanes at N. Westfield St.  Disadvantages   No separate left‐turn lanes for  other accesses.   Poor lane utilization, which  results in issues downstream.  PERFORMANCE MEASURES  Safety  Advantages   Left‐turn lanes provided at N.  Westfield St intersection.   Buffer provided between  roadway and sidewalk.  Disadvantages   Higher number of conflict points  and crash potential.   Vehicle speed differential.  Access  Advantages   Provides full access to all  roadways and driveways along  corridor.  Disadvantages   No refuge for a two‐stage  crossing.    Feasibility  Advantages   Moderate costs.   Minimal right‐of‐way impacts.   Sufficient pedestrian accommodations.    Disadvantages   Requires extra right‐of‐way near N. Westfield St  intersection for left‐turn lanes.   Minimal opportunity for streetscape improvements.  2 Example:  Algoma Blvd at W Murdock Ave – looking north  (Oshkosh, WI)  Corridor  At N. Westfield St Intersection                                                                  Oshkosh Ave Corridor Typical Section Alternatives   Operations  Advantages   Provides separate left‐turn lane   for all access points, reducing  through traffic delays.   Better lane utilization.  Disadvantages   Reduced capacity in 3‐lane section.   Poor operations at N. Sawyer St  intersection due to limited capacity.    PERFORMANCE MEASURES  Safety  Advantages   Reduction in conflict points.   Potential reduction in overall  crashes compared to four‐lane  undivided section.   Reduces speed differential.  Disadvantages   Possible left‐turn conflict in  middle lane.  Access  Advantages   Provides full access to all  roadways and driveways along  corridor.   Provides turning refuge along  Oshkosh Ave.   Easier for side‐street traffic.      Feasibility  Advantages   Sufficient pedestrian accommodations.   3‐lane section: no right‐of‐way impacts.      Disadvantages   3‐lane section: requires transition between  roadway sections to the east and west.   5‐lane section: high cost and right‐of‐way  acquisition required.  3 Three‐Lane TWLTL*  (N. Eagle St to Fox River)  Five‐Lane TWLTL   (N. Koeller St to N. Eagle St)  Example:  N Sherman Ave south of Aberg Ave –  looking north (Madison, WI)  Example:  W Pioneer Rd west of S Main St  – looking east (Fond Du Lac, WI)  * Three‐lane TWLTL will not provide adequate capacity for through vehicles west of Eagle Street.                                                                  Oshkosh Ave Corridor Typical Section Alternatives Operations  Advantages   Optimal capacity for through  vehicles.   Left‐turn lanes at major access  points only.  Disadvantages   Increased travel time for vehicles  that want to turn left where  there is no median opening.  PERFORMANCE MEASURES  Safety  Advantages   Safest corridor alternative.   Reduces head‐on, angle, and  rear‐end crash expectancy.   Reduce vehicle‐to‐vehicle  conflicts.  Disadvantages   Results in U‐turn maneuvers for  driveway access.  Access  Advantages   Provides access control along  corridor.  Disadvantages   Results in right‐in/right‐out  access at most driveways.      Feasibility  Advantages   Opportunities for aesthetic improvements.   Sufficient pedestrian accommodations.   Easy transition between roadway sections.   Disadvantages   High cost.   Right‐of‐way acquisition required.  4 Corridor   (N. Koeller St to N. Eagle St only)  At N. Westfield St Intersection  Example: Monona Drive at St Teresa Terrace – looking north  (Monona, WI)  Example: Monona Drive at E Dean Ave – looking north  (Monona, WI)  Oshkosh Avenue Intersection Alternatives                                                                       Oshkosh Ave & N. Sawyer St Intersection Alternatives   Operations  Advantages   Acceptable LOS for all  movements.   Efficient relief of traffic backups  after lift bridge operations.  Disadvantages   Does not meet current MUTCD  standards.    Feasibility  Advantages   No cost.   Fits in existing right‐of‐way.   Compatible with lift bridge operations.  PERFORMANCE MEASURES  Safety Disadvantages   Intersection confusion.   Unacceptable pedestrian  accommodations.   Increased number of conflict  points.      Access Advantages   Creates gaps in traffic  downstream.  Disadvantages   Does not provide connectivity  between roadways north & south  of Oshkosh Ave.   No direct access to Rainbow Dr.  from N. Sawyer or EB Oshkosh Ave.  Disadvantages   Complex intersection with multiple signals/traffic  control devices for turning movements.   Does not meet current intersection control and  pedestrian standards.  N 1 N. Sawyer St. Oshkosh Ave.                                                                      Oshkosh Ave & N. Sawyer St Intersection Alternatives   PERFORMANCE MEASURES  Oshkosh Ave.  N Operations  Advantages   Acceptable LOS for all  movements.   Efficient relief of traffic backups  after lift bridge operations.      Feasibility  Advantages   Low cost and minimal right‐of‐way acquisition.   Simplifies intersection.   Compatible with lift bridge operations.  Safety Advantages   Standard signalized design  improves driver expectancy.   Provides conventional  pedestrian accommodations.   Fewer conflict points.      Access Advantages   Creates gaps in traffic  downstream.  Disadvantages   Does not provide connectivity  between roadways north & south  of Oshkosh Ave.   No direct access to Rainbow Dr.  from N. Sawyer or EB Oshkosh Ave. Disadvantages   Access restrictions to Rainbow Park and Rainbow  Dr.  2                                                                  Oshkosh Ave & N. Sawyer St Intersection Alternatives   N Oshkosh Ave.  NN N Oshkosh Ave.Oshkosh Ave.  PERFORMANCE MEASURES  Operations  Advantages   Acceptable LOS for all  movements.   Efficient relief of traffic backups  after lift bridge operations.  Disadvantages   Difficult left‐turn maneuvers for  larger vehicles.   Limited EB left‐turn storage.  Feasibility  Advantages   Full access to Rainbow Park.   Reduces Rainbow Park traffic through neighborhood.   Compatible with lift bridge operations.  Safety Advantages   Standard signalized design  improves driver expectancy.   Provides conventional  pedestrian accommodations.  Disadvantages   Offset/skew of N. Sawyer St.    Access Advantages   Combines the Rainbow Dr. and  Sawyer St roadway accesses to a  single intersection.   Provides direct access to/from  Rainbow Park in all directions.   Creates gaps in traffic  downstream.  Disadvantages   High cost.   Additional right‐of‐way acquisition required.  Graham Ave. Graham Ave.Graham Ave.  3 Alt. 2A  Extension of N. Sawyer St to Graham Ave  Advantages  More traditional intersection design  which is more pedestrian friendly.  Disadvantages  Requires acquisition of the two  duplexes north of the alley.  Alt. 2B Extension of N. Sawyer St to Alley  Advantages Does not require acquisition of the  two duplexes.  Disadvantages  Requires more vehicle maneuvering in  a tight space.  Intersection to north  ~175ft from Oshkosh Ave.  Alt. 2C Extension of N. Sawyer St south of Graham Ave  Advantages  Requires less impacts to the two  duplexes property.  Disadvantages  Slight intersection skew, creating less  desirable left‐turning movements for  NB & EB vehicles.                                                                  Oshkosh Ave & N. Sawyer St Intersection Alternatives   PERFORMANCE MEASURES  N Oshkosh Ave.  Operations  Advantages   Acceptable LOS for all  movements.  Disadvantages   Unstable traffic operations  during and after lift bridge  operations.   Difficult turning maneuvers for  larger vehicles.  Feasibility  Advantages   Full access to Rainbow Park.   Reduces Rainbow Park traffic through neighborhood.   Corridor consistency.  Safety Advantages   Reduces conflict points.   Decrease in angle crashes.   Reduction in high severity  crashes.  Disadvantages   Less friendly for multimodal  accommodations.    Access Advantages   Combines the Rainbow Dr. and   N. Sawyer St roadway accesses    to a single intersection.   Provides direct access to/from  Rainbow Park in all directions.  Disadvantages   Does not create gaps in traffic  downstream. Disadvantages   High cost and additional right‐of‐way required.   Not compatible with lift bridge operations.   Challenging design with south approach constraints.  4                                                                  PERFORMANCE MEASURES  N 3 Oshkosh Ave & N. Westfield St Intersection Alternatives  2 5 Operations  Advantages   Acceptable LOS for all  movements.   Provides left‐turn lanes on  Oshkosh Ave.    Feasibility  Advantages   Lower cost and right‐of‐way requirements compared  to roundabout alternative.   Provides pedestrian signals.  Safety  Advantages   Provides conventional  pedestrian accommodations.   Left‐turns separated from  through vehicles along Oshkosh  Ave.  Disadvantages   Increased conflict points  compared to roundabout.  Access  Advantages   Provides full access.   Signal creates gaps in traffic  downstream.                                                                       3 Oshkosh Ave & N. Westfield St Intersection Alternatives  2 6 N PERFORMANCE MEASURES  Operations  Advantages   Acceptable LOS for all  movements.  Disadvantages   Difficult turning maneuvers for  larger vehicles.      Feasibility  Advantages   Corridor consistency.    Safety  Advantages   Reduces conflict points.   Decrease in angle crashes.   Reduction in high severity  crashes.  Disadvantages   Less friendly multimodal  accommodations.    Access  Advantages   Provides full access.  Disadvantages   Does not create gaps in traffic  downstream.          Disadvantages   Higher cost.   Significant right‐of‐way required to the north.                                                                   3 Oshkosh Ave & N. Koeller St Intersection Alternatives  2 7 PERFORMANCE MEASURES  Operations  Disadvantages   Unacceptable operations for SB  approach during PM peak in  30‐year outlook.   Difficult turning maneuvers for  larger vehicles.   Possible queuing issues on west  approach during AM peak in  30‐year outlook.  Feasibility  Advantages   No cost.   No right‐of‐way impacts.    Safety  Advantages   Reduces conflict points.   Decrease is angle crashes.   Reduction in high severity  crashes.  Disadvantages   Less friendly multimodal  accommodations.    Access  Advantages   Provides full access.  Disadvantages   Does not create gaps in traffic  downstream.          Disadvantages   Does not provide adequate intersection capacity.   Possible interaction issues with I‐41 roundabouts as  these roundabouts reach capacity.  N                                                                  3 Oshkosh Ave & N. Koeller St Intersection Alternatives  2 8 PERFORMANCE MEASURES  Operations  Advantages   Acceptable LOS for all  movements.  Disadvantages   Difficult turning maneuvers for  larger vehicles.   Possible queuing issues on west  approach during AM peak in  30‐year outlook.  Feasibility  Advantages   Provides adequate intersection capacity.    Safety  Advantages   Reduces conflict points.   Decrease is angle crashes.   Reduction in high severity  crashes.  Disadvantages   Less friendly multimodal  accommodations.    Access  Advantages   Provides full access.  Disadvantages   Does not create gaps in traffic  downstream.          Disadvantages   Additional costs.   Some right‐of‐way impacts.   Possible interaction issues with I‐41 roundabouts  as these roundabouts reach capacity. N