- "S" Bridges (2)
- 2-panel truss (2)
- 3-panel truss (19)
- 4-panel truss (41)
- 5-panel truss (95)
- 6-panel truss (114)
- 7-panel truss (92)
- 8-panel truss (82)
- 9-panel truss (41)
- 10-panel truss (47)
- 11-panel truss (15)
- 12-panel truss (12)
- 14-panel truss (6)
- 16-panel truss (1)
- 18-panel truss (1)
- Arch (7,554)
- Bailey truss (1)
- Baltimore truss (40)
- Bascule (437)
- Beam (1,568)
- Bedstead truss (15)
- Bowstring truss (56)
- Brick arch (7)
- Burr arch-truss (121)
- Cable-stayed (20)
- Camelback truss (64)
- Cantilevered truss (117)
- Childs truss (8)
- Closed-spandrel arch (1,112)
- Concrete (1)
- Concrete balustrade (77)
- Concrete girder (43)
- Concrete inset railing (32)
- Concrete pony arch (21)
- Concrete tee beam (113)
- Concrete truss (1)
- Corrugated deck (522)
- Covered (511)
- Culvert (16)
- Currently under reconstruction with a new deck, balustrades, and lamps going in on the existing base. (1)
- Curved (24)
- Deck arch (6,648)
- Deck girder (95)
- Deck truss (533)
- Double decker (10)
- Double-intersection Warren truss (15)
- Eyebar suspension (5)
- Ferry (16)
- Footbridge (14)
- Girder (180)
- HAER documented (284)
- Half-hip (19)
- Haupt truss (1)
- Howe truss (87)
- Inclined upper chord (4)
- Inverted bowstring truss (3)
- Kingpost truss (20)
- Laced endposts (9)
- Lannon Stone (26)
- Lattice truss (54)
- Lenticular truss (22)
- Long truss (6)
- MKT Trail (2)
- Milwaukee Downtown
- Milwaukee Movable Bridges (15)
- Movable (858)
- Multiple Kingpost truss (40)
- Mystery (43)
- No guardrails (20)
- Open-spandrel arch (197)
- Over a mile long (94)
- Paddleford truss (4)
- Parker truss (413)
- Partridge truss (4)
- Pegram truss (3)
- Pennsylvania truss (99)
- Pin-connected (417)
- Plate girder (117)
- Polygonal Warren truss (102)
- Pony truss (9,390)
- Post truss (2)
- Pratt truss (1,418)
- Queenpost truss (37)
- Rail-to-road (13)
- Rail-to-trail (33)
- Railroad overpass (39)
- Rainbow arch (138)
- Recently completely rebuilt. (1)
- Relocated (123)
- Riveted (355)
- Riveted truss (2)
- Self-anchored (3)
- Slab (1)
- Smith truss (16)
- Span length 25-50 feet (6,051)
- Span length 50-75 feet (4,655)
- Span length 75-100 feet (3,255)
- Span length 100-125 feet (2,261)
- Span length 125-175 feet (1,989)
- Span length 175-250 feet (992)
- Span length 250-500 feet (572)
- Span length 500-1000 feet (234)
- Span length over 1000 feet (66)
- Span length under 25 feet (2,550)
- State line crossing (146)
- Stearns truss (3)
- Steel arch (261)
- Steel grate deck (355)
- Steel stringer (353)
- Steel through arch (128)
- Stone arch (1,350)
- Stone piers (3)
- Suspension (151)
- Swing (266)
- Thacher truss (2)
- Through girder (66)
- Through truss (5,227)
- Timber pony arch (1)
- Timber stringer (1,010)
- Total length 25-50 feet (5,259)
- Total length 50-75 feet (4,939)
- Total length 75-100 feet (3,326)
- Total length 100-125 feet (2,420)
- Total length 125-175 feet (2,628)
- Total length 175-250 feet (1,783)
- Total length 250-500 feet (2,094)
- Total length 500-1000 feet (996)
- Total length 1000-2500 feet (696)
- Total length over 2500 feet (337)
- Total length under 25 feet (963)
- Truss (15,766)
- Tubular piers (14)
- Tunnel (253)
- Uncovered wooden truss (3)
- Vertical endposts (5)
- Vertical lift (171)
- Vierendeel truss (3)
- Waddell "A" truss (3)
- Warren truss (700)
- Warren-Turner truss (1)
- Whipple truss (51)
- Wooden deck (5,156)
- Wooden railroad overpass (11)
- Wrought iron (8)