1.8.4. Typical Footprints for Interchanges, Intersections, & Grade Separations Major intersections and grade separations typically require significantly more space than standard roadway cross-sections. To support long-range mobility needs and help future improvements remain feasible, the Master Roadway Network establishes minimum corner clip requirements for large arterial intersections, potential interchange locations, and railroad grade separations.
Roadway Intersections & Interchange Footprints The ROW preservation needs of major intersections vary depending on the functional classification and ultimate lane count of the intersecting corridors. Higher-order pairings, particularly those involving Principal or Major Arterials, are more likely to require larger corner clips to accommodate long-term operational needs such as dual left-turn lanes, extended storage, channelization, multimodal facilities, or the potential for future grade separation. To support consistent ROW preservation, each unique combination of roadway classifications is assigned a required intersection radius. Corner clips are calculated from that radius using the ultimate ROW width of each approach, as established by the adopted cross-sections in Section 1.7.4 . These values reflect the most space-intensive reasonable configuration for that intersection type, helping prevent underestimation of ROW in locations that may experience high operational demands as the City grows.
How to use the table: 1. Identify each roadway’s classification (PA, MA, MiA, MC) from the MRN-CR Functional Classification Map. 2. Find the matching row in Table 1.2 to determine the intersection radius. 3. Calculate the corner clip leg for each approach by subtracting one-half the ultimate ROW width of that approach from the radius. Refer to Figure 1.40 for an illustration of this calculation. 4. Apply the resulting corner clip dimensions when reviewing plats, zoning cases, redevelopment proposals, or capital projects. Requests for deviation are subject to the amendment or waiver process in Section 1.10 .
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Fort Worth Master Transportation Plan | Master Roadway Network
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