7 bridges with vertical clearance data on 420 in Washington. Lowest: 174.9ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 174.9ft | 20Th Avenue West | Rd To Boeing Parking Lot | Boeing Intrchng | 1969 | Map |
| 223.4ft | Broadway | Bnsf Railway | 1.4 N Jct I-5 | 2016 | Map |
| 226.7ft | Hewitt Avenue | Burlington Northern Rr | 0.1 Mi E Of Broadway | 1989 | Map |
| 250.0ft | Pacific Avenue | Bnsf Rr, Smith Street | Pacific Ave 0.25 Mi E I5 | 2002 | Map |
| 253.3ft | Everett Avenue | Bnsf Rr | Inter Terminal & Everett | 2003 | Map |
| 259.2ft | 41St St. | Bnsf Rr & Maple St | 0.1 E Jct I-5 | 2006 | Map |
| 263.5ft | Riverside Road | Riverside Rd, Bnsf Rr | 0.1 Ne Jct E. Marine View | 1998 | Map |