18 bridges with vertical clearance data on SR-1A in Massachusetts. Lowest: 121.7ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 121.7ft | St 1 A | Hwy Bningtn & Neptune | 1 Mi N Of Callahan Tun. | 1951 | Map |
| 132.5ft | St 1 A | Hwy Saratga St & U Trn | 1.7 Km N Of Callahan Tun | 1951 | Map |
| 135.8ft | St 1 A/Sb | Other Relief | .48 Km N E Of Calln Tun | 1951 | Map |
| 136.5ft | St 1 A/High St | Us 1 | .4 Mi S Merrimac River | 1934 | Map |
| 147.3ft | St 1 A/N Shore Rd | St 1 A/Ramp A&B | 4.8 Km Ne Jct Sr 60&Sr1A | 1972 | Map |
| 152.6ft | St 1 A | Hwy Chelsea & Bremen S | 1000Ft Ne Of Callhan Tun. | 1951 | Map |
| 154.9ft | St 1 A/Nb | Other Relief | 2000 Ft Ne Callahan Tun | 1951 | Map |
| 154.9ft | St 1 A/Sb | Other Relief & Ped Walkw | .16 Km N Of Callahan Tun | 1951 | Map |
| 165.0ft | St 1 A/Main St | Hwy Prison Access Rd | .6 Mi Sw Of Winter St | 1952 | Map |
| 169.9ft | St 1 A/Washington | I 95 Nb/St 128 Nb | Us 1A At St 128 | 2010 | Map |
| 172.6ft | St 1 A/Washington | I 95 Sb/St 128 Sb | Us 1A At St 128 | 2010 | Map |
| 174.2ft | St 1 A/Main St | Rr Mbta | 1.6 Mi N Rowley Town Hall | 1907 | Map |
| 180.8ft | St 1 A/On Ramp | Other Relief | 1.4 Km Ne Of Sumner Tun | 1951 | Map |
| 182.4ft | St 1 A/Cabot St | Water Danvers River | At Danvers River | 1996 | Map |
| 183.1ft | St 1 A/Main St | Rr Mbta/Csx | Csx Qbf Mp Qbf 7.94 | 1955 | Map |
| 183.4ft | St 1 A | Hwy M Coughlin & Relie | 1.3 Km Ne Of Callahan Tun | 1951 | Map |
| 186.4ft | St 1 A/Newprt Av | Comb Rr Amtrak/Mbta Rd | .2 Mi So I 95 Interchange | 2011 | Map |
| 197.2ft | St 1 A/Main St | Rr Mbta/Csx | .3 Mi. N. Of St27 | 1900 | Map |