List of bridges documented by the Historic American Engineering Record in Delaware

This is a list of bridges documented by the Historic American Engineering Record in the U.S. state of Delaware.

Bridges

Survey No.	Name (as assigned by HAER)	Status	Type	Built	Documented	Carries	Crosses	Location	County	Coordinates
DE-12-B	Pennsylvania Railroad Improvements, Swing Bridge	Extant	Swing span	1902	1977	Northeast Corridor	Brandywine River	Wilmington	New Castle	39°44′23″N 75°32′13″W
DE-12-C	Pennsylvania Railroad Improvements, Brick Arch Viaduct	Extant	Brick arch	1902	1977	Northeast Corridor	City streets	Wilmington	New Castle	39°44′08″N 75°33′52″W
DE-20	Augustine Bridge	Replaced	Pratt truss	1885	1979	Road 49 (Augustine Cutoff)	Brandywine River	Wilmington	New Castle	39°45′39″N 75°33′25″W
DE-22	Rehoboth Avenue Bridge	Replaced	Rolling lift (Scherzer) bascule	1926	1984	DE 1A (Rehoboth Avenue)	Lewes and Rehoboth Canal	Rehoboth Beach	Sussex	38°42′52″N 75°05′34″W
DE-25	Thompson's Bridge	Replaced	Steel built-up girder (concrete-encased)	1935	1990	DE 92 (Thompsons Bridge Road)	Brandywine River	Wilmington	New Castle	39°49′01″N 75°34′11″W
DE-27	Heald Street Bridge	Rehabilitated	Reinforced concrete flat slab	1942	1990	US 13 (South Heald Street)	Former Pennsylvania Railroad Shellpot Branch	Wilmington	New Castle	39°43′34″N 75°32′46″W
DE-28	Odessa Bridge	Replaced	Center-bearing swing span	1928	1997	DE 299 (Main Street)	Appoquinimink River	Odessa	New Castle	39°27′10″N 75°39′18″W
DE-29	Wagamon Pond Dam and Bridge	Replaced	Reinforced concrete cast-in-place slab	1917	1990	Road 197 (Mulberry Street)	Broadkill River	Milton	Sussex	38°46′38″N 75°18′46″W
DE-30	Red Bridge	Replaced	Steel girder (concrete-encased)	1916	1991	DE 5 (Union Street)	Broadkill River	Milton	Sussex	38°46′43″N 75°18′40″W
DE-31	South Wilmington Causeway Bridge	Replaced	Reinforced concrete flat slab	1940	1991	US 13 Bus. (South Market Street)	Former Pennsylvania Railroad Shellpot Branch	Wilmington	New Castle	39°43′28″N 75°33′21″W
DE-33	Seaford Bridge	Rehabilitated	Simple trunnion bascule	1925	1991	Road 13 (North Front Street)	Nanticoke River	Seaford	Sussex	38°38′25″N 75°36′33″W
DE-34	State Highway Bridge No. 20	Rehabilitated	Steel girder (concrete-encased)	1932	1992	Road 232 (Rockland Road)	Husbands Run	Rockland	New Castle	39°47′10″N 75°33′42″W
DE-35	State Highway Bridge No. 2	Rehabilitated	Steel girder (concrete-encased)	1933	1992	Road 232 (Rockland Road)	Brandywine River	Rockland	New Castle	39°47′49″N 75°34′30″W
DE-36	Railroad Avenue Bridge	Replaced	Steel rolled stringer (concrete-encased)	1903	1992	Church Avenue	Mispillion River	Milford	Kent	38°54′44″N 75°25′51″W
DE-37	Thompson's Station Bridge	Rehabilitated	Warren truss	1928	1993	Road 329 (Chambers Rock Road)	White Clay Creek	Newark	New Castle	39°43′58″N 75°45′35″W
DE-39	Mill Creek Bridge	Replaced	Timber-concrete composite	1936	1994	DE 6 (Woodland Beach Road)	Mill Creek	Smyrna	Kent	39°18′28″N 75°34′33″W
DE-40	Delaware State Bridge No. 21A	Rehabilitated	Rolling lift (Scherzer) bascule	1930	1995	DE 1 (Rehoboth Boulevard)	Mispillion River	Milford	Kent	38°55′02″N 75°25′04″W
DE-43	Delaware Bridge No. 179A	Replaced	Warren truss	1900	1995	Road 285 (Evanson Road)	Mill Creek	Hockessin	New Castle	39°46′58″N 75°42′06″W
DE-48	State Bridge No. 424	Replaced	Warren truss	1884	1996	Road 446 (Wiggins Mill Road)	Wiggins Mill Pond Outlet	Townsend	New Castle	39°24′12″N 75°42′15″W
DE-51	State Bridge No. 177	Rehabilitated	Stone arch	1846	1996	Brackenville Road	Mill Creek	Hockessin	New Castle	39°46′31″N 75°41′24″W
DE-52	State Bridge No. 123A	Replaced	Timber stringer	1933	1996	Road 123 (Stratham Lane)	Kings Causeway Branch	Milford	Kent	38°58′27″N 75°22′32″W
DE-53	State Bridge No. 456	Replaced	Timber stringer	1934	1996	Road 45 (Walker School Road)	Sawmill Branch of Smyrna River	Townsend	New Castle	39°22′25″N 75°36′04″W
DE-54	Carter's Bridge	Rehabilitated	Steel rolled stringer	1909	1996	Road 211 (Still Road)	Choptank River	Sandtown	Kent	39°03′16″N 75°44′04″W