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by dmoy 556 days ago
Beltway or bypass (or spur(?)) depending on the configuration.

405 in WA, OR, and CA are bypasses.

495 in DC is a beltway.

Minneapolis / St Paul has 394 - a spur (I guess?), 494/694 beltway, and 35E which really is a bypass but still carries a legacy name alongside 35W.