16 bridges with vertical clearance data on SR-299 in California. Lowest: 140.1ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 140.1ft | State Route 299 | Mad River | 01-Hum-299-R1.55 | 1948 | Map |
| 148.3ft | State Route 299 | Up Rr, Amtrk, Division | 02-Sha-299-23.91-Rdg | 1958 | Map |
| 149.3ft | State Route 299 Wb | Hawley Road | 02-Sha-299-25.54 | 1974 | Map |
| 150.6ft | State Route 299 | Ramp Road | 01-Hum-299-R4.04 | 1965 | Map |
| 150.9ft | State Route 299 Eb | Hawley Road | 02-Sha-299-25.54 | 1974 | Map |
| 151.6ft | State Route 299 | Lindsay Cr,Fieldbrook Rd | 01-Hum-299-R3.50 | 1965 | Map |
| 154.2ft | State Route 299 | Mad River | 01-Hum-299-R1.56 | 1965 | Map |
| 154.2ft | State Route 299 | Essex Lane | 01-Hum-299-R2.92 | 1965 | Map |
| 154.9ft | State Route 299 | Blue Lake Blvd | 01-Hum-299-R5.45 | 1970 | Map |
| 155.5ft | State Route 299 | Old Oregon Trail | 02-Sha-299-27.22 | 1974 | Map |
| 155.8ft | State Route 299 | Us Highway 101 | 01-Hum-299-0.01-Arc | 1956 | Map |
| 157.5ft | State Route 299 | Old Oregon Trail | 02-Sha-299-27.22 | 1974 | Map |
| 224.1ft | State Route 299 | Bnsf Ry | 02-Las-299-11.89 | 1977 | Map |
| 225.7ft | State Route 299 | Glendale Dr | 01-Hum-299-R3.78 | 1965 | Map |
| 250.0ft | State Route 299 | Maint Rd | 01-Hum-299-R5.29 | 1965 | Map |
| 787.4ft | State Route 299 | Redwood Creek | 01-Hum-299-R22.33 | 1965 | Map |