§ 154.089 OFF-SITE STREET CONSTRUCTION OR IMPROVEMENT.
   (A)   Generally. Any development shall have an adequate off-site street and thoroughfare system that:
      (1)   Provides for streets in an appropriate location, of suitable design and width, and with appropriate traffic control devices to accommodate existing traffic, traffic anticipated from the development, and traffic anticipated from other developments impacting the same streets;
      (2)   Affords satisfactory access to adjoining properties; and
      (3)   Accommodates police, firefighting, sanitation, and street maintenance equipment.
   (B)   Access required. The subdivider shall acquire right-of-way and necessary easements for the construction of any off-site streets necessary to connect the subdivision with an adequate off-site street network.
      (1)   Any development with five or more lots shall have access to a collector or major thoroughfare on a paved street with a design speed of 30 miles per hour.
      (2)   If existing streets do not provide access, the developer shall do one of the following:
         (a)   Construct a new street which includes:
            1.   Acquisition and dedication of adequate right-of-way;
            2.   Designing the street in accordance with the street design criteria of § 154.080; and
            3.   Constructing the street in accordance with the city standard street specifications.
         (b)   Improve existing streets which includes:
            1.   An engineer's design to determine what work is required to improve the existing street for a design speed of 30 miles per hour;
            2.   Submitting the engineer's design to the City Engineer for approval; and
            3.   Constructing the required improvements in accordance with the approved design and the city standard street specifications.
   (C)   Adequacy required. Before plat approval and in conjunction with the rough proportionality determination under § 154.028, the City Engineer shall determine whether the existing or proposed roadway network, including perimeter streets, which will serve the subdivision has adequate capacity to accommodate existing traffic, traffic reasonably anticipated from the subdivision, and traffic reasonably anticipated from other developments approved or to be approved within a reasonable period. The city's determination shall be based on information provided by the applicant and applicant's engineer in the plat application and any supporting studies.
   (D)   Analysis. A traffic study, including a traffic impact analysis, shall be required for an application for a plat meeting the following criteria:
      (1)   A traffic impact analysis shall be required for a proposed subdivision when:
         (a)   The expected traffic generation exceeds 500 one-way vehicle trips per day;
         (b)   The proposed subdivision consists of 100 or more dwelling units; or
         (c)   The proposed subdivision abuts a collector or arterial street designated on the city's master thoroughfare plan.
      (2)   The City Engineer may require a subdivision that generates less than 500 one-way vehicle trips to submit a traffic impact analysis where existing roadways do not appear to be adequate to accommodate the additional traffic to be generated by the proposed development.
   (E)   Effect of adequacy determination. If this section requires the submission of a traffic study and the adequacy determination for roadways indicates that the off-site roadway network serving the proposed subdivision is inadequate, the subdivider shall execute a community facilities agreement with the city to ensure the roadways are adequate to accommodate the impacts of the subdivision. The agreement may include a joint participation agreement under § 154.063 or an escrow of funds for future construction under § 154.065.
   (F)   Phasing. If the property to be developed is intended as a phase in a larger subdivision or constitutes a portion of the property to be ultimately developed, the city may require a demonstration of adequacy for additional phases as a condition of approval of the proposed plat.
('68 Code, App. B, § 5.10) (Ord. 8-1989-34, passed 8-8-89; Am. Ord. 06-2019-32, passed 6-11-19)