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96 Figure 54 INDOT statewide mobility corridor hierarchy. Source: INDOT 2030 Long Range Transportation Plan (82, Chapter 6, Figure 6-2, p. 78). The INDOT ACS provides the following access spacing Minnesota Department Of Transportation's and design details for all three tiers: Development And Access Permitting Review Process · Type of access permitted (at-grade intersection, pri- vate driveway) Figure 55 identifies the development and access permitting · Traffic movements allowed (full movements, right-in/ process used by the Minnesota Department of Transpor- right-out only) tation (MnDOT) (84, pp. 23). The access review process · Traffic control devices permitted (traffic signal, stop begins the same way, whether reviewing a development plan sign) or a permit application for a public street connection or pri- · Spacing criteria for public intersections and driveways vate driveway. For development plans, the process ends with comments to the local government unit (LGU). For permit applications, the process continues through the completion of the access connection. As shown in Figure 55, three major phases each involve several steps:
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97 TABLE 21 SUMMARY OF KEY DIFFERENCES IN SIGNALIZED INTERSECTION SPACING GUIDELINES BY TIER OF INDIANA ACCESS CLASSIFICATION SYSTEM Minimum Acceptable Bandwidth for Deviation from Ideal Signalized Intersection Spacing Tier Ideal Signalized Intersection Spacing Guidelinea Urban Rural 1A and 1B 0.5 mi 45% 50% 2A and 2B 0.5 mi 40% 45% 3A and 3B 0.5 mi 35% 40% Source: Access Management Guide (83, Table 3-2, p. 30). Note: A 0.25 mi spacing guideline applies to all state highways with speeds 40 mph located within a built-up urban area, regardless of tier. · Phase 1--General Development and Access Review: During the first phase of the review, MnDOT staff is initially contacted and gathers information related to the proposed development or access request. The devel- opment plan or access request is evaluated against the guidelines and considerations in Chapter 3 of MnDOT's Access Management Manual (i.e., "Guidelines for Public Street and Driveway Connections") and MnDOT prepares recommendations. When reviewing development plans, the review process ends when the official comments are submitted to the LGU. · Phase 2--Permitting Process: During the second phase, MnDOT determines the conditions specific to an access permit, establishes the amount for the deposit, and issues the permit. · Phase 3--Construction, Inspection, and Release of Deposit: During the last phase, the applicant constructs the access, MnDOT inspects it, and when it is con- structed in accordance to the conditions of the access permit, MnDOT returns the deposit and closes the file. MnDOT's Access Management Manual highlights the importance of the following key principles in the develop- ment review and permitting process: · Address Access Early--Every effort should be made to address access as early as possible, while the greatest num- ber of options remains available. As development decisions are made, they may preclude the LGU or developer from later implementing the best access option for the site. · LGUs Are Partners in Access Management--Because they have the authority to develop the local street network, approve development plans, and require access-related improvements, the LGU plays a key role in determining where development occurs, how access is provided, and what highway improvements will be made. · Access Review Is an Iterative Process --MnDOT guidance is written as though the review process was linear, but access reviews are an iterative process. It FIGURE 55 Minnesota DOT development and access will often be necessary to contact the LGU or property permit review process. Source: Access Management owner more than once and to consider more than one Manual (84, Chapter 4, p. 4). option for providing access to a particular property.