Aqueduct

A.C.I.D. Flume Bridge (Shasta County, California)
Built in 1918 as part of the Anderson Cottonwood Irrigation District's main canal
Open-spandrel arch bridge over Anderson Gulch on A.C.I.D in Anderson
Open to traffic

Animas River Aqueduct (San Juan County, New Mexico)
Pratt through truss bridge over Animas River on an aqueduct

Aqueduct Bridge Version 1 (Washington, District of Columbia)
Built 1833-43, replaced 1868
Lost Timber stringer bridge over Potomac on Canal
Replaced by new bridge

Aqueduct Bridge Version 2 (Washington, District of Columbia)
Built 1868 replaced 1887
Lost Howe deck truss bridge over Potomac River on Canal and Road
Replaced by new bridge

Aqueduct Bridge Version 3 (Washington, District of Columbia)
Built 1887, superstructured added in 1904 for Electric Trolley
Lost Pratt deck truss bridge over Potomac River on Road/Electric Railroad
Lost

Aqueduct Number 5 over Eel River for Wabash and Erie Canal (Cass County, Indiana)
Canal opened Logansport up for trade, but this aqueduct played an important role in crossing the Eel River on it route from Toledo to Evansville during the mid 1800's. Canal was abandoned in 1876.
Lost Bridge over Eel River on Wabash and Erie Canal in Logansport
Lost

Bear River Canal Malad Flume (Box Elder County, Utah)
Built early 1900s
Lost Deck truss bridge over Malad River on Bear River Canal
Lost

Bow Ridge Aqueduct (Indiana County, Pennsylvania)
Bridge over Conemaugh River on Pennsylvania Main Line Aqueduct

C&O Canal Antietam Creek Aqueduct (Washington County, Maryland)
Built 1834
Stone arch bridge over Antietam Creek

C&O Canal Catoctin Creek Aqueduct (Frederick County, Maryland)
Partially collapsed by flooding 1973; rebuilt and reopened 2011
Stone arch bridge over Catoctin Creek on C&O Canal Towpath Path (former Chesapeake & Ohio Canal)
Open to pedestrians

C&O Canal Conococheague Creek Aqueduct (Washington County, Maryland)
Built 1834
Three-span stone arch bridge over Conococheague Creek on the C&O Canal
Open to pedestrians

C&O Canal Fifteen Mile Creek Aqueduct (Allegany County, Maryland)
Suspected build date 1835-1850
Stone arch bridge over Fiftteen Mile Creek on C&O Canal
Open to pedestrians

C&O Canal Tonolaway Creek Aqueduct (Washington County, Maryland)
Stone arch bridge over Tonolaway Creek on the C&O Canal

Cabin John Aqueduct Bridge (Montgomery County, Maryland)
Built 1853-63; rehabilitated 2001
Stone arch bridge over Cabin John Creek on Macarthur Blvd.
Open to traffic

Dry Creek Viaduct (Stanislaus County, California)
Open-spandrel arch bridge over Dry Creek
Open to traffic

Duck Creek Aqueduct (Franklin County, Indiana)
Built 1847; rebuilt 1949
Covered aqueduct carrying Whitewater Canal over Duck Creek at Metamora
Open to canal traffic

Fall Creek Aqueduct (Marion County, Indiana)
Built 1904 to replace a previous structure washed away by flooding
Open-spandrel arch bridge over Fall Creek on Central Canal
Open to traffic

Hanamaulu Creek Aqueduct Bridge (Kauai County, Hawaii)
Abandoned open-spandrel arch bridge over Hanamaulu Creek on Aqueduct (abandoned)
Derelict/abandoned

Hennepin Canal Aqueduct #1 (Bureau County, Illinois)
Built between 1892-1907 Replaced pedestrian bridge to carry trail
Lost Bridge over East Bureau Creek on Hennepin Canal
Lost / Replaced with pedestrian bridge to restore bike path

Hennepin Canal Aqueduct #2 (Bureau County, Illinois)
Built between 1892-1907. Lost in 1998 flood.
Hennepin Canal aqueduct over Big Bureau Creek
Lost in 1998 flood. Replaced with pedestrian bridge to restore bike path

Hennepin Canal Aqueduct #3 (Bureau County, Illinois)
Built between 1892-1907
Hennepin Canal aqueduct over West Bureau Creek
Open to pedestrian & canoe traffic

Hennepin Canal Aqueduct #4 (Bureau County, Illinois)
Built between 1892-1907
Hennepin Canal aqueduct over Cole Creek
Open to pedestrian and canoe traffic

Hennepin Canal Aqueduct #5 (Henry County, Illinois)
Built between 1892-1907
Aqueduct over Mud Creek on Hennepin Canal NW of Annawan
Open to canoe and pedestrian traffic

Hennepin Canal Aqueduct #6 (Henry County, Illinois)
Built between 1892 - 1907
Aqueduct over Spring Creek on Hennepin Canal 3 mi NW of Atkinson
Open to canoe & pedestrian traffic

Hennepin Canal Aqueduct #7 (Henry County, Illinois)
Built between 1892 - 1907
Aqueduct over Geneseo Creek on Hennepin Canal
Open to canoe & pedestrian traffic

Hennepin Canal Aqueduct #8 (Henry County, Illinois)
Built between 1892-1907
Lost Aqueduct over Green River on Hennepin Canal
Removed. Replaced with pedestrian bridge to carry trail over river

Hennepin Canal Feeder Aqueduct #9 (Bureau County, Illinois)
Built 1904
Bridge over Green River on Hennepin Canal Feeder
Open to pedestrian and canoe traffic

High Bridge (New York County, New York)
Oldest extant bridge in New York City. Built in 1848 to carry the original Croton aqueduct across the Harlem River into New York City. Five masonry arches replaced with a steel arch by the Corps of Engineers in 1927 to benefit river navigation.
Stone and steel arch bridge over Harlem River
Closed to all traffic. Renovation and reopening are rumored.

I & M Canal Fox River Aqueduct (La Salle County, Illinois)
I&M Canal Aqueduct/Illinois Traction System over the Fox River
I&M Canal aqueduct/IL Traction System spaning the Fox River
Open to Foot & Bike Traffic. Aqueduct is dry.

I & M Canal Little Vermillion Aqueduct (La Salle County, Illinois)
Aqueduct over Little Vermillion River on I&M Canal
Open to foot, bike and canoe traffic

I&M Canal Aux Sable Aqueduct (Grundy County, Illinois)
Built in 1847, Rebuilt in 1927
Bridge over Aux Sable Creek on I&M Canal
Open to foot, bike and canoe traffic

I&M Canal Nettle Creek Aqueduct (Grundy County, Illinois)
Built in 1847 Rebuilt a few times. Current looks like CCC work
Bridge over Nettle Creek on I&M Canal
Destroyed by flooding

Jacks Narrows Aqueduct (Huntingdon County, Pennsylvania)
Built 1830CA
Lost Aqueduct over Juniata River on Former Pennsylvania Canal
No longer exists, only the 2 piers remain

Kings River Canal Bridge (Kings County, California)
Pratt through truss bridge over Kings River on Water flume canal
Open to traffic

Mazourka Canyon Road Bridge (Inyo County, California)
Built 1919; rehabilitated 1947
Steel stringer bridge over Los Angeles Aqueduct on Mazourka Canyon Road
Open to traffic

Miami & Erie Canal Aqueduct (Montgomery County, Ohio)
Washed out in 1913 flood
Lost Aqueduct over Mad River on the Miami & Eric Canal
Destroyed by flood

Mission Espada Aqueduct (Bexar County, Texas)
Built between 1731 and 1745
Stone arch bridge over Piedras Creek on Acequia Madre
Still carries water

Pecos River Flume (Eddy County, New Mexico)
Built ca. 1903
Four-span concrete arch aqueduct carrying Southern Main Canal over Pecos River at Carlsbad
Still carries water

Schoharie Creek Aqueduct (Montgomery County, New York)
Built 1839-1841, put into service 1845; six arches demolished 1915; three more have collapsed since
Stone arch bridge over Schoharie Creek on the Erie Canal towpath at Fort Hunter
Derelict/abandoned

Seneca Aqueduct (Montgomery County, Maryland)
Built 1833, One span collasped after flooding in 1971
Brick arch bridge over Seneca Creek on C&O Canal Path
Open to pedestrians

Silver Creek Wabash and Erie Canal Aqueduct (Huntington County, Indiana)
Built to carry the canal over the former Woodworth's Creek, originally made of timber then limestone, one of Huntington County's most endangered historical sites. Seen from US 24 near 750 West.
Stone arch bridge over Silver Creek(formerly known as Woodworth's Creek in mid 1850's) on Former Wabash and Erie Canal
Closed to all traffic

Spring Mill Park Aqueduct (Lawrence County, Indiana)
Built 1830's to run water downhill from Hamer Cave Spring
Timber stringer bridge over Land on Hamer Cave Spring to Mill
Open to traffic

St. Mary River Aqueduct Bridge (Glacier County, Montana)
Built 1915 by the Minneapolis Bridge Co.; bypassed 2008
Two-span through truss bridge over St. Mary River on CR 224, also carrying a pair of water pipelines
Closed to traffic, but still carries pipelines

Sunol Aqueduct (Flume Bridge) (Alameda County, California)
Built between 1920-1925 by the Spring Valley Water Company
Abandoned open-spandrel arch bridge
Abandoned

Tohickon Creek Aqueduct Point Pleasant, PA (Bucks County, Pennsylvania)
Originally built in 1832. Out of commission for ten years prior to 2001 reopening.
Bridge over Tohickon Creek on Delaware Canal at Point Pleasant, PA
Open to pedestrians

Wabash and Erie Canal Lagro Creek Aqueduct (Wabash County, Indiana)
Once carried canal boats over Lagro Creek on their journey from Toledo, Ohio to Evansville, Indiana and points in between. Canal abandoned in or about 1870's.
Lost Stone arch bridge over Lagro Creek on Formerly W&E Canal
Lost