# List of bridges on the National Register of Historic Places in Maryland

This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Maryland.
| Name | Built | Listed | Location | County | Type |
| B & O Railroad Potomac River Crossing | 1894, 1931 | February 14, 1978 | Harpers Ferry, West Virginia 39°19′27″N 77°43′43″W﻿ / ﻿39.32417°N 77.72861°W﻿ / 39.32417; -77.72861﻿ (B & O Railroad Potomac River Crossing) | Washington | |
| B & O Bridge | ca. 1867 | November 23, 1977 | Keedysville 39°30′15″N 77°42′49″W﻿ / ﻿39.50417°N 77.71361°W﻿ / 39.50417; -77.71361﻿ (B & O Bridge) | Washington | |
| Bennies Hill Road Bridge | ca. 1889 | June 27, 1979 | Middletown 39°24′34″N 77°34′12″W﻿ / ﻿39.40944°N 77.57000°W﻿ / 39.40944; -77.57000﻿ (Bennies Hill Road Bridge) | Frederick | Bowstring arch truss |
| Bloomington Viaduct | 1851, 1916 | November 21, 1976 | Bloomington 39°28′37″N 79°4′5″W﻿ / ﻿39.47694°N 79.06806°W﻿ / 39.47694; -79.06806﻿ (Bloomington Viaduct) | Garrett | Multispan masonry bridge |
| Bollman Suspension and Trussed Bridge | 1869 | October 18, 1972 | Savage 39°8′5″N 76°49′31″W﻿ / ﻿39.13472°N 76.82528°W﻿ / 39.13472; -76.82528﻿ (Bollman Suspension and Trussed Bridge) | Howard | Bollman Truss |
| Bullfrog Road Bridge | 1908 | November 21, 1978 | Taneytown 39°41′44″N 77°14′25″W﻿ / ﻿39.69556°N 77.24028°W﻿ / 39.69556; -77.24028﻿ (Bullfrog Road Bridge) | Carroll | Parker truss |
| Carrollton Viaduct | 1828, 1829 | November 11, 1971 | Baltimore 39°16′31″N 76°39′19″W﻿ / ﻿39.27528°N 76.65528°W﻿ / 39.27528; -76.65528﻿ (Carrollton Viaduct) | Baltimore City | |
| Casselman's Bridge, National Road | 1813 | October 15, 1966 | Grantsville | Garrett | Single arch |
| Crum Road Bridge | ca. 1880 | December 28, 1978 | Walkersville 39°28′47″N 77°19′39″W﻿ / ﻿39.47972°N 77.32750°W﻿ / 39.47972; -77.32750﻿ (Crum Road Bridge) | Frederick | Bowstring arch truss |
| Fourpoints Bridge | ca. 1876 | November 29, 1978 | Emmitsburg 39°40′17″N 77°18′4″W﻿ / ﻿39.67139°N 77.30111°W﻿ / 39.67139; -77.30111﻿ (Fourpoints Bridge) | Frederick | Pratt truss |
| Gilpin's Falls Covered Bridge | ca. 1855 | December 3, 2008 | North East 39°38′55.8″N 75°57′20.1″W﻿ / ﻿39.648833°N 75.955583°W﻿ / 39.648833; -75.955583﻿ (Gilpin's Falls Covered Bridge) | Cecil | Burr Arch Through Truss |
| Howard Street Tunnel | 1890, 1895 | July 2, 1973 | Baltimore 39°18′17″N 76°37′15″W﻿ / ﻿39.30472°N 76.62083°W﻿ / 39.30472; -76.62083﻿ (Howard Street Tunnel) | Baltimore City | Brick-lined tunnel with iron-arched centerings |
| Jericho Covered Bridge | 1865, 1937 | September 13, 1978 | Jerusalem, Kingsville 39°27′34″N 76°23′16″W﻿ / ﻿39.45944°N 76.38778°W﻿ / 39.45944; -76.38778﻿ (Jericho Covered Bridge) | Baltimore, Harford | Burr Arch Through Truss |
| LeGore Bridge | 1898-1900 | September 18, 1978 | Woodsboro 39°34′50″N 77°18′50″W﻿ / ﻿39.58056°N 77.31389°W﻿ / 39.58056; -77.31389﻿ (LeGore Bridge) | Frederick | Five-span stone arch |
| Lombard Street Bridge | 1877, 1974 | September 27, 1972 | Baltimore 39°19′0″N 76°42′1″W﻿ / ﻿39.31667°N 76.70028°W﻿ / 39.31667; -76.70028﻿ (Lombard Street Bridge) | Baltimore City | Water-main truss |
| Loys Station Covered Bridge | ca. 1860 | June 23, 1978 | Thurmont 39°36′26″N 77°21′8″W﻿ / ﻿39.60722°N 77.35222°W﻿ / 39.60722; -77.35222﻿ (Loys Station Covered Bridge) | Frederick | Covered Multiple king post |
| Old Mill Road Bridge | 1882 | March 7, 1979 | Rocky Ridge 39°36′7″N 77°20′19″W﻿ / ﻿39.60194°N 77.33861°W﻿ / 39.60194; -77.33861﻿ (Old Mill Road Bridge) | Frederick | Pratt truss |
| Patterson Viaduct Ruins | 1829 | June 3, 1976 | Catonsville, Ilchester 39°15′0″N 76°45′51″W﻿ / ﻿39.25000°N 76.76417°W﻿ / 39.25000; -76.76417﻿ (Patterson Viaduct Ruins) | Baltimore, Howard | Masonry Arch Bridge |
| Poffenberger Road Bridge | 1878 | November 29, 1978 | Middletown 39°22′54″N 77°34′18″W﻿ / ﻿39.38167°N 77.57167°W﻿ / 39.38167; -77.57167﻿ (Poffenberger Road Bridge) | Frederick | Pratt or Whipple thru truss |
| Roddy Road Covered Bridge | ca. 1860 | June 23, 1978 | Thurmont 39°38′26″N 77°23′39″W﻿ / ﻿39.64056°N 77.39417°W﻿ / 39.64056; -77.39417﻿ (Roddy Road Covered Bridge) | Frederick | Covered Single king post |
| Thomas Viaduct, Baltimore & Ohio Railroad | 1835 | October 15, 1966 | Relay 39°13′19″N 76°42′49″W﻿ / ﻿39.22194°N 76.71361°W﻿ / 39.22194; -76.71361﻿ (Thomas Viaduct, Baltimore & Ohio Railroad) | Baltimore, Howard | Multiple stone arch |
| Union Arch Bridge (Cabin John Aqueduct) | 1864 | February 28, 1973 | Cabin John 38°58′22.28″N 77°8′52.69″W﻿ / ﻿38.9728556°N 77.1479694°W﻿ / 38.9728556; -77.1479694﻿ (Cabin John Bridge) | Mongtomery | Masonry arch |
| Utica Covered Bridge | ca. 1860 | June 23, 1978 | Thurmont 39°31′28″N 77°23′46″W﻿ / ﻿39.52444°N 77.39611°W﻿ / 39.52444; -77.39611﻿ (Utica Covered Bridge) | Frederick | Covered Burr arch truss |
| Waverly Street Bridge | 1892 | September 7, 1984 | Westernport 39°29′23″N 79°2′34″W﻿ / ﻿39.48972°N 79.04278°W﻿ / 39.48972; -79.04278﻿ (Waverly Street Bridge) | Allegany | bowstring arch truss |
| Wilson's Bridge | 1819 | March 15, 1982 | Hagerstown 39°39′27″N 77°50′53″W﻿ / ﻿39.65750°N 77.84806°W﻿ / 39.65750; -77.84806﻿ (Wilson's Bridge) | Washington | |