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Showing 1 - 32 of 32 Records
Bridges, viaducts, and underpasses: Moveable bridges of Chicago (Folder 59)
246 Images
Community Activities bring the city's government into the neighborhood. Mayor Richard J. Daley's campaign for a cleaner Chicago reached out to students in Chicago's schools and made them part of the Junior Citizen's Committee for a Cleaner Chicago.
Date:
1994
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: La Salle St. (Folder 80)
70 Images
Bridges and viaducts: La Salle St. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1969
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: 100th St. Bridge; 106th St. Bridge (Folder 103)
137 Images
Bridges and viaducts: 100th St. Bridge; 106th St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1971
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 109)
104 Images
Bridges and viaducts: Milwaukee Ave. Viaduct; North Ave. Bridge; Oakwood Blvd Viaduct; Polk St. Bridge; Randolph St. Bridge; W. Roosevelt Rd. Bridge; N. State St. Bridge; N. Stetson Ave. Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Ashland Ave. and Belmont Ave. (Folder 3)
37 Images
Bridges, viaducts and underpasses included: S. Ashland Ave. Bridge (1914, 1938); N. Ashland Ave. Bridge (1936, 1951, 1953 [aerial view with Webster St. Bridge], 1975); Belmont Ave. (1917, 1924, 1941, 1953, 1976, undated)
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: La Salle St. Bridge; La Salle St. Viaduct; La Salle St. Underpasses; S. Loomis St. Bridge (Folder 91)
69 Images
Bridges and viaducts: La Salle St. Bridge; La Salle St. Viaduct; La Salle St. Underpasses; S. Loomis St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1970
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 94)
182 Images
Bridges and viaducts: W. Cermak Rd. Bridge; W. Chicago Ave. Bridge; N. Clark St. Bridge; N. Damen Viaduct; N. Dearborn St. Bridge; N. Dearborn St. Viaduct, W. Erie St. Bridge; W. Division St. Bridge (over canal). Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1971
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: various bridges, 1971 (Folder 104)
172 Images
Bridges and viaducts: various bridges, 1971. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken. Various Bridges, including: S. Cicero, S. Pulaski, Devon and Touhy viaducts, Eisenhower Viaducts, Halsted to Pulaski, Kedzie, Jackson, Lavergne, Wilson, Loomis, Throop, Halsted, Cermak, Canal, 18th , Monroe, Adams, Jackson, Pulaski, Laramie, Randolph, Kinzie, Halsted, Division, Randolph, Washington, Madison, Skyway, Wood St., Wabash, Dearborn, Western, California, Homan, Unidentified.
Date:
1971
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: various bridges and viaducts (Folder 113)
232 Images
Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken. This folder includes images of E. 95th St. Bridge; 100th St. Bridge ; 106th St. Bridge; 130th St. & S. Halsted; State St., Lake Shore Drive. Outer Drive (Ogden Slip).
Date:
1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: N. Lake Shore Drive, North Ave. Pedestrian Overpass through Monroe St. Bridge (Folder 43)
26 Images
Bridges, viaducts and underpasses included: N. Lake Shore Drive, North Ave. Pedestrian Overpass(1962); S. Lake Shore Drive at Roosevelt Rd. Pedestrian Overpass (undated); S. Lake Shore Drive, 42nd St. Pedestrian Overpass (1962); Lock St. Bridge (1964); Loomis-Fuller Railroad Viaduct (undated drawing, 1955, 1964); Madison St. Bridge (1941); Michigan Ave. Bridge (1912 drawing, undated, 1939, 1944, 1956, 1957); Monroe St. Bridge (1966)
Date:
1939-1966
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Ohio St. Bridge and Polk St. Bridge (Folder 44)
19 Images
Bridges, viaducts and underpasses included: Ohio St. Bridge (1958); Polk St. Bridge (1935, 1941, 1944, 1966)
Date:
1935-1958
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: various bridges and viaducts (Folder 121)
187 Images
Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken. This folder includes images of W. Chicago Ave., W. Division St., W. North Ave.,N. Lake Shore Drive (Outer Drive), N. Michigan Ave., N. Wabash Ave., N. State St., N. Dearborn St., N. Clark St., N. La Salle St., N. Halsted St., W. Division St., N. Milwaukee Ave., N. Des Plaines St., W. Erie St., W. Division St., N. Milwaukee Ave., W. Chicago Ave., S. Canal St., S. Ashland Ave., N. Ashland Ave., W. Wacker Dr., E. Wacker Dr., W. Adams St., E. 92 St., E. 95 St., E. 100 St., E. 106 St., S. Torrence Ave., E. 130 St., W. Kinzie St., plaques.
Date:
1973
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: N. Michigan Ave.; W. Monroe; N. Ogden Viaduct; Polk St. Viaduct; S, Pulaski Viaduct (Folder 81)
64 Images
Bridges and viaducts: N. Michigan Ave.; W. Monroe; N. Ogden Viaduct; Polk St. Viaduct; S, Pulaski Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1969
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 92)
157 Images
Bridges and viaducts: Madison, Monroe Bridges; N. Michigan Ave. Viaduct; North Ave. Bridge; N. Ogden Ave. Viaduct; W. Randolph St.; Skyway; Torrence Ave. Bridge; W. Van Buren St. Bridge; Wacker Drive Viaduct; W. Washington. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1970
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 122)
222 Images
Bridges and viaducts: Argyle Ave. Bridge; Cermak Rd. Bridge; Cermak Rd. Bridge, Tug; Clark St. Bridge; Coast Guard Drive; Columbus Dr. Bridge; Congress St. Bridge; Damen Ave. Bridge; S. Damen Ave.Viaduct at 37th St.; Dearborn St. Bridge; Des Plaines St. Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1974
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: Laramie Ave. Viaduct; Loomis St. Bridge; Michigan Ave. Bridge; Michigan Ave. Viaduct (Folder 108)
131 Images
Bridges and viaducts: Laramie Ave. Viaduct; Loomis St. Bridge; Michigan Ave. Bridge; Michigan Ave. Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Kinzie St. Bridge (Folder 42)
48 Images
Bridges, viaducts and underpasses included: Kinzie St. Bridge (1944, 1948, 1949, 1951, 1952, 1953, 1957, aerials [undated]1960, 1964)
Date:
1944-1964
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Roosevelt Rd. Viaduct (Folder 47A)
22 Images
Bridges, viaducts and underpasses included: Roosevelt Rd. Viaduct (1939, 1940, 1947, 1953)
Date:
1939-1953
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 97)
160 Images
Bridges and viaducts: S. Kedzie Ave. Bridge; Kennedy Feeder ramp; W. Kinzie St. Bridge; Kilpatrick-Kinzie Viaduct; E. Lake St. Viaduct; W. Lake St. Bridge; Lake Shore Drive (Outer drive. Ogden Slip); Lake Shore Drive at Wilson; La Salle St. Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1971
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: various bridges and viaducts (Folder 112)
18 Images
These prints document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken. This folder includes images of E. 92 St. Bridge, E. 95th St. Bridge, E. 100 St. Bridge, E. 103 St. Bridge, E. 106 St. Bridge, S. Torrence Ave. Bridge.
Date:
1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: S. Damen Ave. Bridge through Diversey Blvd. Bridge (Folder 6)
39 Images
Bridges, viaducts and underpasses included: S. Damen Ave. Bridge (1930, 1931, 1973); N. Damen Ave. Bridge (1953); Dearborn St. Bridge (undated, 1953, 1956, 1957, 1959, 1960, 1963-64, 1964, 1972, 1973); Diversey Blvd. Bridge (1914, 1944, 1954, 1960, 1968)
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: N. Halsted St. Bridge through S. Halsted St. Bridge (Folder 8)
18 Images
Bridges, viaducts and underpasses included: N. Halsted St.Bridge (1930, 1941, 1944, 1951, 1952, 1953, 1969, 1981); N. Halsted St. Viaduct (undated rendering, undated construction aerial photo, 1969); S. Halsted St. Bridge (1931, 1933, 1934)
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: Madison St. Bridge; Michigan Ave. Bridge; Michigan Ave. Viaduct; Milwaukee Ave. Viaduct; Montrose Ave. Viaduct; Monroe Ave. Viaduct (Folder 118)
124 Images
Bridges and viaducts: Madison St. Bridge; Michigan Ave. Bridge; Michigan Ave. Viaduct; Milwaukee Ave. Viaduct; Montrose Ave. Viaduct; Monroe Ave. Viaduct. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1973
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Harrison St. Bridge through S. Kedzie Ave. Bridge (Folder 9)
25 Images
Bridges, viaducts and underpasses included: Harrison St. Bridge (1952, 1958 rendering, 1959, 1960 cross section drawing); Indiana Ave. Bridge (1914, 1952, 1959, 1964, 1977 [dedication of bridge with Mayor Michael A. Bilandic); Jackson St. Bridge (1953); N. Kedzie Ave. Bridge (1914); S. Kedzie Ave. Bridge (1951, 1954, 1969, rendering undated)
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Kennedy Expressway Ohio Feeder Ram and Kinzie St. Bridge (Folder 10)
27 Images
Bridges, viaducts and underpasses included: Kennedy Expressway Ohio Feeder Ramp (1972); Kinzie St. Bridge (1914, 1944, 1948, 1949, 1951, 1952, 1953, 1957, 1963, 1964, 1968, 1969)
Date:
1914-1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 86)
69 Images
Bridges and viaducts: W. Adams St.; W. Addison St.; Archer-Ashland Overpass; Argyle and Wilson Underpass; N. Ashland Ave.; W. Belmont; Berwyn Underpass; Bryn Mawr Underpass; Chicago-Halsted Viaduct; W. Cortland St. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1970
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 99)
121 Images
Bridges and viaducts: North Ave. Bridge; Ogden Ave. Bridge (over Canal); Ogden Ave. Bridge (over River) ; Ohio St. Feeder Ramp; Pulaski Rd. Bridge (over Canal); E. Randolph St. Viaduct; W. Randolph St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1971
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: Wacker Dr. Viaduct; Wells St. Bridge; N. Western Ave. Bridge; S. Western Ave. Bridge; Kennedy Expressway over N. Western Ave. (Folder 110)
144 Images
Bridges and viaducts: Wacker Dr. Viaduct; Wells St. Bridge; N. Western Ave. Bridge; S. Western Ave. Bridge; Kennedy Expressway over N. Western Ave. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1972
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 117)
110 Images
Bridges and viaducts: Fullerton Ave. Bridge; Glenlake Ave. and Lake Michigan; Grand Ave. Viaduct; Halsted St. Viaduct; Humbolt Park Lagoon; Kinzie St. Bridge; Lake St. Bridge; Lake Shore Drive Viaduct (at Randolph); Loomis St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1973
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts (Folder 119)
98 Images
Bridges and viaducts: North Ave. at Lake Shore Drive; Pulaski Rd. Viaduct; Randolph St. Bridge; Roosevelt Rd. Bridge; Roosevelt Rd. Viaduct; Rush St. Bridge; Torrance Ave. Bridge; Van Buren St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1973
Collection:
James S. Parker Collection
Access:
Public access
Bridges and viaducts: Fullerton Ave. Bridge; Grand Ave. Bridge; Grand Ave. Viaduct; Homan Ave. Viaduct; Kinzie St. Bridge (Folder 124)
73 Images
Bridges and viaducts: Fullerton Ave. Bridge; Grand Ave. Bridge; Grand Ave. Viaduct; Homan Ave. Viaduct; Kinzie St. Bridge. Many of the 35 mm negatives document damage and deterioration on Chicago's bridges, viaducts and underpasses that need repair though some frames provide a general view of the bridges at the time they were taken.
Date:
1974
Collection:
James S. Parker Collection
Access:
Public access
Bridges, viaducts, and underpasses: Chicago Ave. Bridge through Congress Bridge (Folder 5)
17 Images
Bridges, viaducts and underpasses included: Chicago Ave. Bridge (1914, 1969); Clark St. Bridge (1930, 1972, undated aerial); Cicero Bridge (1926, 1960); Columbus Drive Bridge (model); Congress Bridge (1956, 1958, 1959)
Collection:
James S. Parker Collection
Access:
Public access

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22 Chicago River (Chicago, Ill.) 22 Loop (Chicago, Ill.) 16 River North (Chicago, Ill.) 13 West Loop Gate (Chicago, Ill.) 12 Fulton River District (Chicago, Ill.) 9 South Loop (Chicago, Ill.) 8 Lincoln Park (Chicago, Ill.) 7 Goose Island (Chicago, Ill.) 7 Pilsen (Chicago, Ill.) 6 Bridgeport (Chicago, Ill.) 6 Near North (Chicago, Ill.) 6 Near North Side (Chicago, Ill.) 5 Hegewisch (Chicago, Ill.) 5 South Deering (Chicago, Ill.) 4 Bucktown (Chicago, Ill.) 4 Calumet River (Ill.) 4 East Side (Chicago, Ill.) 4 Little Village (Chicago, Ill.) 4 McKinley Park (Chicago, Ill.) 4 West Town (Chicago, Ill.) 3 Albany Park (Chicago, Ill.) 3 Brighton Park (Chicago, Ill.) 3 Calumet Heights (Chicago, Ill.) 3 Lake Shore Drive (Chicago, Ill.) 2 Archer Heights (Chicago, Ill.) 2 Chicago (Ill.) 2 Gold Coast (Chicago, Ill.) 2 Lake View (Chicago, Ill.) 2 Lower West Side (Chicago, Ill.) 2 Ravenswood (Chicago, Ill.) 2 South Chicago (Chicago, Ill.) 2 Streeterville (Chicago, Ill.) 2 West Pullman (Chicago, Ill.) 1 Avondale (Chicago, Ill.) 1 Berwyn (Ill.) 1 Bridgeport (Ill.) 1 Bronzeville (Chicago, Ill.) 1 Chicago Sanitary and Ship Canal (Ill.) 1 East Pilsen (Chicago, Ill.) 1 Eden Green (Chicago, Ill.) 1 Edgewater (Chicago, Ill.) 1 Fulton River District Chicago (Ill.) 1 Heart of Chicago (Chicago, Ill.) 1 Humboldt Park (Chicago, Ill.) 1 Kenwood (Chicago, Ill.) 1 Little Calumet River (Ind. and Ill.) 1 Logan Square (Chicago, Ill.) 1 Near South Side (Chicago, Ill.) 1 Near West Side (Chicago, Ill.) 1 North Mayfair (Chicago, Ill.) 1 North Park (Chicago, Ill.) 1 Old Town (Chicago, Ill.) 1 River West (Chicago, Ill.) 1 Riverdale (Chicago, Ill.) 1 Riverview Amusement Park (Chicago, Ill.) 1 Uptown (Chicago, Ill.) 1 West Garfield Park (Chicago, Ill.)

28 Movable bridges 18 Bridges--Foundations and piers 18 Bridges--Maintenance and repair 15 Iron and steel bridges 14 Bridges--Abutments 10 Aerial photographs 9 Bridges--Floors 8 Bridges--Design and construction 8 Wood poles 7 Boats and boating 7 Iron and steel bridges--Corrosion 6 Bridges--Deterioration 6 City traffic 6 Commercial art 6 Viaducts 5 Bridge railings 5 Expansion joints 5 Underpasses 4 Construction and demolition debris 4 Construction workers 4 Cranes, derricks, etc. 4 Roads 4 Truss bridges 4 Waterfronts 3 Aerial views 3 Barges 3 Elevated highways 3 Iron and steel workers 3 Movable bridges--Design and construction 3 Railroad tracks 3 Soil stabilization 3 Tall buildings 2 Automobiles 2 Bas-relief 2 Bolts and nuts 2 Bridges 2 Bridges--Bearings 2 Buildings 2 Columns, Concrete 2 Concrete bridges--Cracking 2 Control boards (Electrical engineering) 2 Couplings 2 Engineering personnel 2 Footbridges 2 Foundations 2 Fracture mechanics 2 Garages 2 Gearing, Bevel 2 Gearing, Spur 2 Gearing, Worm 2 Landscapes 2 Mechanical engineering 2 Office buildings 2 Pedestrians 2 Pipe 2 Plank roads 2 Plaques, plaquettes 2 Public works 2 Railroad cars 2 Railroad yards 2 Refuse and refuse disposal 2 Reinforced concrete 2 Rivers 2 Roads--Maintenance and repair 2 Shafting--Bearings 2 Sidewalks--Maintenance and repair 2 Steel I-beams 2 Street lighting 2 Street-railroad tracks 2 Street-railroads 2 Traffic safety warnings 2 Trucks 2 Wooden beams 1 Advertising 1 Amusement Parks 1 Amusement parks 1 Architectural design 1 Architectural drawing 1 Architectural ironwork 1 Architectural models 1 Automobile Parking 1 Automobile driving 1 Barge 1 Bartenders 1 Benches 1 Billboards 1 Bird's-eye views in art 1 Boatyards 1 Bricks 1 Brush 1 Bus drivers 1 Buses 1 Cables 1 Cantilever bridges 1 Charts, diagrams, etc. 1 Children 1 Chimneys 1 City planning 1 Cobblestone roads 1 Concrete bridges 1 Concrete bridges--Corrosion 1 Concrete bridges--Design and construction 1 Concrete masonry 1 Concrete walls 1 Concrete--Corrosion 1 Construction equipment 1 Decoration and ornament, Architectural 1 Docks 1 Docks, Loading and unloading, Garages 1 Drawing 1 Drums (Containers) 1 Electric circuits 1 Electric conduits 1 Electric machinery 1 Electric wiring 1 Employees 1 Express highways 1 Factories 1 Fog- Forecasting 1 Gates 1 Graffiti 1 Hand-railing 1 High-rise apartment buildings 1 Hoisting machinery 1 Iron and Steel Bridges 1 Iron and steel bridges--Design and construction 1 Iron and steel bridges--Maintenance and repair 1 Land use 1 Lighting 1 Litter (Trash) 1 Local transit stations 1 Mayors 1 Motorboats 1 Moveable bridges 1 Parking meters 1 Pavements 1 Pavements, Asphalt 1 Pavements, Brick 1 Pavements, Concrete 1 Pedestrains 1 Plague 1 Plaques, plaquettes, Baroque 1 Play 1 Police 1 Polictical advertising 1 Politicians 1 Railing 1 Railroad trains 1 Railroads 1 Reinforced concrete--Corrosion 1 Reinforcing bars 1 Riparian areas 1 Road construction workers 1 Road work zones 1 Roads--Guard fences 1 Roads--Interchanges and intersections 1 Sailboats 1 Scaffolding 1 Ships 1 Shipwrecks 1 Signs 1 Signs and signboards 1 Skyscrapers 1 Staircases 1 Stairs 1 Steel--Corrosion 1 Streets 1 Tanks 1 Teenagers 1 Telephone lines 1 Tourists 1 Traffic accidents 1 Traffic regualtions 1 Traffic regulations 1 Traffic safety 1 Traffic signs and signals 1 Traffic signs and signals--Lighting 1 Truss bridges--Design and construction 1 Truss bridges--Maintenance and repair 1 Tunnels 1 Viaducts--Design and construction 1 Warnings 1 Waterfronts--Recreational use 1 Windows 1 Wooden bridges 1 Wooden bridges--Maintenance and repair 1 Work environment 1 Wrecking