Apple Maps iOS 15: Detailed Bridges and Interchanges

Apple Maps in iOS 15 introduced a comprehensive visual overhaul called the "Detailed City Experience," fundamentally changing how complex roadway geometry is displayed. By integrating three-dimensional elevation, custom-designed road assets, and lane-level visual cues, the app provides drivers with an accurate, real-world depiction of multi-level highway interchanges, overpasses, and elevated bridge paths.

3D Layering and Elevation Modeling

Instead of flattening overlapping highways into a confusing 2D plane, iOS 15 renders roadways with realistic verticality. Elevated bridges, flyovers, and underpasses appear suspended at their actual heights relative to the terrain and other roads below. Shading and structural supports are rendered beneath bridges, allowing drivers to visually distinguish whether an upcoming road segment crosses over or dips under their current route.

Custom Interchange Architecture

For complex freeway junctions, Apple Maps replaces generic map lines with tailored 3D models of specific interchanges. The app accurately maps out collector-distributor lanes, cloverleaf ramps, and high-speed directional flyovers. Crucial details—such as divided medians, concrete barriers, and transition zones—are drawn to scale, eliminating ambiguity about which ramp connects to which freeway.

Windshield-Level Driving View

During active turn-by-turn navigation, the perspective automatically shifts as a driver approaches a multi-tier interchange. The camera drops from an overhead top-down view to a lower, driver-centric "windshield" angle. In this view, the designated route highlights brightly against the road surface, trailing directly up the appropriate elevated ramp or overpass while graying out non-applicable exits.

Surface and Lane Markings

To complement elevated road geometry, the app includes high-fidelity pavement details. Visual elements such as turn arrows, painted median stripes, merge zones, and specialized transit corridors are embedded directly on the roadway surface. When navigating elevated bridges or complex approaches, these markings help drivers position their vehicles in the correct lane well before the physical split occurs.