I-80 Eastshore Corridor to MacArthur Maze Approach
At a glance: Graded 73 out of 100 (Tier 3: High-Speed Merge & Technical Canyon) across 7.4 miles in San Francisco Bay Area. Multi-freeway convergence where I-80, I-580, and I-880 split and merge across elevated structures within tight decision distances.
Why this corridor sits in Tier 3
Approaching the San Francisco-Oakland Bay Bridge toll plaza from Berkeley and Emeryville, the Eastshore Freeway requires drivers to sort across five lanes while port freight trucks enter from Powell Street and I-880. Short weaving envelopes on elevated viaducts leave limited recovery shoulders.
Key roadway traits
- Multi-deck elevated ramps
- Left- and right-exit splits
- High heavy-truck share
Four-factor geometric & crash decomposition
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Connected highway & local crash profiles
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Other Tier 3 California corridors
Methodology & interpretation limits
Complexity Index combines horizontal curvature, sustained elevation grade, speed-transition demand, and 12-month historical reported crash concentration per corridor mile. Counts describe observational public records unadjusted for daily traffic volume and do not represent driving safety advice. Missing-coordinate collision records in surrounding cities are reported separately in live buffered queries and are never plotted at synthetic coordinates.
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