Full Closures... (cul-de-sacs, dead ends)
   

Full street closures are barriers placed across a street to completed close the street to through-traffic, usually leaving only sidewalks open. They are good for locations with extreme traffic volume problems and several other measures have been unsuccessful.

Advantages:

  • Full Closures are able to maintain pedestrian and bicycle access
  • They are very effective in reducing traffic volume

Disadvantages:

  • They require legal procedures for street closures (in California - varies by state)
  • They cause circuitous routes for local residents and emergency services
  • They may be expensive
  • They may limit access to businesses

Effectiveness:

  • Average of 44% decrease in traffic volume, or a decrease of 671 vehicles per day (from a sample of 19 sites)

Similar Measures:

  • By opening the street only for incoming traffic, you have a Half Closure
  • By placing a barrier lengthwise along the center of a street past a side street, you have a Median Barrier
  • By placing the barrier diagonally through an intersection, you have a Diagonal Diverter

Cost Estimate(s):

  • $120,000 (Seattle, WA)

Berkeley, CA - This closure features removable bollards to prevent unauthorized motor vehicles from crossing, while allowing bicycles to pass along the narrow opening in the center.


Palo Alto, CA -This closure uses two landscaped curb extensions and a single removable bollard to restrict motor vehicle access. The opening is wide enough to allow bicylce travel in both directions.


Gainesville, FL - This wide closure uses extensive landscaping to prevent any motor vehicles from passing. Pedestrian and bicycle connectivity is maintained by a short paved pathway.


Coral Gables , FL - This gated closure maintains pedstrain access on the sidewalks while preventing any travel along the roadway itself except by authorized users.

   
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