A-1 Arcadia with Signal

Transcription

1 A-1 Arcadia with Signal Dakota St Variation: Half 3/4 with westbound left at Main 4 - Fewer downtown access points - Less efficient traffic operations - Highest project costs vanston. ote: traffic volumes shown represent expected + Lowest property impacts + Best pedestrian crossing performance + Driver and pedestrian safety Provides left turns onto southbound from CH 21 Cost saving measure - removes need for nt St. extension Risk of westbound turn lane at Main queueing back into thru lanes Streetscape Opportunity Score: Good Preliminary stimated Cost: $1.2M See section a Variation: 3/4 with Pedestrian Crossing o St. d a r o l Co Variation: 3/4 at h, Roundabout at Arcadia S ote:. extension to nt St. needed for traffic circulation. Arcadia Av h e See section b Allows for southbound left onto h Westbound traffic from h is facilitated by making a right on CH 21 and making a u-turn at Arcadia roundabout Traffic calming effect on entry to downtown from West Gateway feature opportunity within roundabout < nhanced pedestrian crossing and gateway feature in median between Main and St A-1 Typical Section b (across.) Additional downtown access - provides left turns onto from CH 21 Cost saving measure - removes need for nt St. extension Requires wider road footprint (north side) Minimal buffer/streetscape opportunity between pedestrian refuge and travel lanes Risk of southbound turn lane at Main queueing back into thru lanes Reduces eastbound left turn lane at nt A-1 Typical Section a (across CH 21 at Main) Variation: Pinched 2 MDIA CROSS TUR LA The nt St. extension would not be recommended by the Project Management Team due to the high cost associated with the necessary soil remediation when there are other viable alternatives. Only applicable with A-1 Main Variations allowing for southbound left turn onto Main from CH 21 liminates left turn onto nt St. from northbound Maintains existing alignment with nt St. Cost Saving measure - eliminates much of the cost associated with remediating poor soils along > Corner enhancements at signalized intersections

2 A-2 Arcadia with Roundabout Dakota St Variation: Right-in/Right-out with Pedestrian Refuge + Minimal property impacts + Most efficient traffic operations + Best accommodates local and regional trips vanston. ote: traffic volumes shown represent expected liminates northbound left onto. This may increase the number of vehicles making u-turns at the roundabout, if they missed the turnoff Arcadia intersection Reduces roadway footprint at. Provides safest pedestrian crossing option with opportunity for enhanced streetscape elements within median - High number of crashes - Risk in funding eligibility - Pedestrian safety Streetscape Opportunity Score: Very Good Pedestrian Crossings (across 21): 4 Preliminary stimated Cost: $7.3M See section c Variation: 3/4 with Pedestrian Crossing See section d Variation: Half 3/4 with westbound left at Main Variation: Pinched Variation: Right-in/Right-out at h, Signal at Arcadia h Additional downtown access - provides left turns onto northbound and southbound from CH 21 Requires wider road footprint (north side) Minimal buffer/streetscape opportunity between pedestrian refuge and travel lanes Risk of westbound turn lane at Main queueing back into thru lanes liminates southbound left onto Variation routes traffic through signal at Arcadia, relying on Colorado St. for westbound and southbound movements to and from. Arcadia already equipped for traffic signal Variation requires Arcadia extension to nt St. for traffic circulation Provides left turn lane onto southbound from CH 21 Risk of southbound turn lane at Main queueing back into thru lanes nt St. ^ Gateway feature in median between Main and nt St A-2 Typical Section c (across CH 21 at Main) A-2 Typical Section d (across.) 88 WAL ALK K Only applicable with A-2 Main Variations allowing for southbound left turn onto Main from CH 21 liminates left turn onto nt St. from northbound Maintains alignment with existing nt St. ^ Decorative Pavement > Public Art at Arcadia roundabout MDIA 14 TUR LA 4 MDIA 7 TUR LA 4 4

3 B-1 Main with Signal Dakota St vanston. ote: traffic volumes shown represent expected + Most downtown access points + Managed traffic movements + Lowest cost - Less efficient traffic operations - Longest nue wait times/ queueing - Highest crash severity Streetscape Opportunity Score: Fair Preliminary stimated Cost: $7.2 M See section e Variation: Roundabout at Main Variation: Signal at h Variation: Right-in/Right-out at Arcadia < Banner arms and decorative pavement in medians Facilitates full-access movements at. Creates tight access to properties just north and south of intersection. Gateway opportunity within roundabout May be necessary to limit north/southbound movements within roundabout during peak hours Roundabout provides u-turn movement for those wishing to travel northbound on Arcadia from south side of downtown h Facilitates full-access movements at with controlled intersection Reduced streetscape improvement opportunities Potential for higher vehicle speeds entering from the west Removes left turn lanes onto north and southbound Arcadia. Removes a downtown access Will send more traffic to h and Main to make north or southbound movements Potentially increased traffic on local streets Streetscaping opportunity in median - plantings,, etc. nt St B-1 Typical Section e (across CH 21 at Main) > Corner enhancements at signalized intersections < Public art at h roundabout 1 MDIA 12 TUR LA TRAIL 4 4

4 B-2 Main with Roundabout Dakota St + Most downtown access points + fficient traffic operations + Best accommodates local and regional trips vanston. ote: traffic volumes shown represent expected - Most property impacts - Highest number of crashes/pedestrian safety concerns - Highest potential for intersection blockages Streetscape Opportunity Score: Very Good Preliminary stimated Cost: $7.35M See section f Colorado St Variation: Signal at h Variation: Right-in/Right-out at Arcadia h Facilitates full-access movements at with controlled intersection Reduced streetscape improvement opportunities Potential for higher vehicle speeds entering from the west Removes left turn lanes onto north and southbound Arcadia. Removes a downtown access Will send more traffic to h and Main to make north or southbound movements Potentially increased traffic on local streets Streetscaping opportunity in median - plantings,, etc. B-2 Typical Section f (across CH 21 at Main) S nt St. A roundabout at Main would not be recommended by the Project Management Team due to the high impacts to private property, including access to adjacent businesses, and operational concerns with the two roundabouts in such close proximity. < Public art at Main & h roundabouts > Gateway Monument in median between Main and ROUDABOUT ^ Decorative Pavement 18 MDIA TRAIL 44

5 A Alternative Hybrid Dakota St vanston. o St. d a r o l Co S Arcadia Av h e nt St 4