| Special Bridge Conditions Legend |
| ! | Confirmed demolition date within one year or an especially historic bridge that is threatened with demolition at any level. |
| X | The bridge has been confirmed demolished or collapsed. |
| S | The bridge has been dismantled or moved to an offsite location and is not currently available for public viewing. |
| L | Most or all of the original bridge material has been demolished and replaced, including historically significant elements, but some original parts of the bridge remain. |
| Note: This website cannot guarantee the current condition of any bridge on this website. Bridges lacking these icons should not necessarily be considered condition-free. |
| Bridge Name | HSR Rating | Facility Carried / Feature Intersected | Location | Structure Type | Structure Dimensions | Construction Date / Builder or Contractor | Description | Thumbnail |
118th Avenue Bridge
Monroe Road Bridge |
 | 118th Avenue (Monroe Road) Over Swan Creek | Rural: Allegan County, Michigan | Concrete 50 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 50 ft Main Span Length: 48 ft Roadway Width: 22 ft Main Spans: 1 |
1926 By: Townsend-Shuttleworth-Ballmer Company of Lansing, Michigan and Michigan State Highway Department | This attractive historic bridge is located in a scenic, public state game area and deserves preservation. | 
|
133rd Avenue Railroad Overpass
|
 | Railroad (CSX) Over 133rd Avenue | Rural: Allegan County, Michigan | Concrete Slab, Fixed | Main Spans: 1 | 1908 By: Unknown | This small, simple concrete bridge is a very old example of a general design still used today. | 
| X |
139th Avenue Bridge
|
 | 139th Avenue Over Black Creek | Rural: Allegan County, Michigan | Metal 3 Panel Rivet-Connected Warren Pony Truss, Fixed |
Total Length: 44 ft Main Span Length: 42 ft Roadway Width: 16 ft Main Spans: 1 |
1920 By: Unknown | A good example of a small warren pony truss in a pleasant setting. | 
|
18th Street Bridge
|
 | 18th Street Over Rabbit River | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 45 ft Main Span Length: 45 ft Roadway Width: 25 ft Main Spans: 1 |
1929 By: Unknown | A small example of a steel stringer with concrete balustrade railings. | 
|
2nd Street Bridge
South Side Bridge |
 | 2nd Street Over Kalamazoo River | Allegan: Allegan County, Michigan | Metal 12 Panel Pin-Connected Whipple Through Truss, Fixed |
Total Length: 229 ft Main Span Length: 200 ft Roadway Width: 16 ft Main Spans: 1 |
1886 By: King Bridge Company of Cleveland, Ohio | A beautiful through truss forms the centerpiece for this town and was built by the prominent King Bridge Company. | 
| ! |
2nd Street Bridge North
|
| 2nd Street Over Gun River | Rural: Allegan County, Michigan | Concrete 50 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 50 ft Main Span Length: 48 ft Roadway Width: 22 ft Main Spans: 1 |
1926 By: Unknown and Michigan State Highway Department | This bridge is one of two beautiful concrete camelback bridges only a short distance from each other. | 
| ! |
2nd Street Bridge South
|
| 2nd Street Over Gun River | Hooper (Rural): Allegan County, Michigan | Concrete 50 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 50 ft Main Span Length: 48 ft Roadway Width: 22 ft Main Spans: 1 |
1926 By: Yost Brothers of Decatur, Indiana and Michigan State Highway Department | This bridge was both rare as a good example of a small camelback bridge, and also as a Covert Act bridge. | 
| ! |
30th Street Little Rabbit River Bridge
|
 | 30th Street Over Little Rabbit River | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 60 ft Main Span Length: 60 ft Roadway Width: 24 ft Main Spans: 1 |
1947 By: Carl Goodwin and Sons of Allegan, Michigan | A small steel beam bridge with Michigan's attractive R4 railings. | 
|
30th Street Rabbit River Bridge
|
| 30th Street Over Rabbit River | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 80 ft Main Span Length: 40 ft Roadway Width: 24 ft Main Spans: 2 |
1947 By: Carl Goodwin and Sons of Allegan, Michigan | A typical mid-20th Century steel stringer bridge in Michigan that retains its original railings. | 
|
56th Street Bridge
|
| 56th Street Over South Branch of Black River | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 45 ft Main Span Length: 43 ft Roadway Width: 22 ft Main Spans: 1 |
1931 By: Unknown and Michigan State Highway Department | This attractive bridge is a small but good example of its kind. | 
|
66th Street Bridge
|
 | 66th Street Over Middle Branch Black River | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 65 ft Main Span Length: 65 ft Roadway Width: 24 ft Main Spans: 1 |
1949 By: Carl Goodwin and Sons of Allegan, Michigan and Michigan State Highway Department | A representative example of mid 20th Century bridge technology in Michigan. | 
|
A-45 Rabbit River Bridge
|
 | A-45 (11th Street) Over Rabbit River | Rural: Allegan County, Michigan | Concrete T-Beam, Fixed |
Total Length: 31.8 ft Main Span Length: 31.8 ft Roadway Width: 35 ft Main Spans: 1 |
1940 By: Unknown and Michigan State Highway Department | This is a small concrete bridge with a nice railing design. | 
| X |
A-45 Railroad Overpass
|
 | A-45 (10th Street) Over Railroad (Norfolk Southern) | Rural: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 150 ft Main Span Length: 53.8 ft Roadway Width: 44 ft Main Spans: 3 |
1939 By: John W. Hertel | This bridge showcases the horrific damage that salt does to steel bridges. | 
|
Allegan City Dam Bridge
|
 | Dam Access Over Kalamazoo River | Allegan: Allegan County, Michigan | Metal 4 Panel Rivet-Connected Warren Pony Truss, Fixed | Main Spans: 1 | By: Unknown | This truss bridge serves to allow workers to acess the various parts of a small dam. | 
|
Hamilton Railroad Bridge
|
| Railroad (Formerly CSX) Over Rabbit River | Hamilton: Allegan County, Michigan | Wood Stringer (Multi-Beam), Fixed |
Total Length: 300 ft Roadway Width: 12 ft |
1916 By: Unknown | This appears to be a rather old, and large example of wooden railroad bridge construction in Michigan. | 
|
Kalamazoo River Railroad Bridge
|
| Railroad (Norfolk Southern) Over Kalamazoo River | Rural: Allegan County, Michigan | Metal 9 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed | Main Spans: 2 | By: Unknown | An extremely rare example of a railroad pony truss bridge, plus it is two-span, and has highly unusual plate steel members! | 
|
M-222 Overpass
|
 | M-222 (116th Avenue) Over US-131 | Rural: Allegan County, Michigan | Concrete Pre-Stressed Stringer (Multi-Beam), Fixed |
Total Length: 188 ft Main Span Length: 58.7 ft Roadway Width: 40.4 ft Main Spans: 4 |
1959 By: Carl Goodwin and Sons of Allegan, Michigan and Michigan State Highway Department | A representative example of an early pre-stressed concrete overpass in Michigan. | 
|
New Richmond Bridge
57th Street Bridge |
 | 57th Street (Old Allegan Road) Over Kalamazoo River | New Richmond: Allegan County, Michigan | Metal Pin-Connected Warren Pony Truss, Movable: Swing (Center Pier) and Approach Spans: Metal Warren Pony Truss, Fixed |
Total Length: 422 ft Main Span Length: 72 ft Roadway Width: 11.8 ft Main Spans: 1 |
1879 By: Milwaukee Bridge and Iron Works of Milwaukee, Wisconsin | The longest pony truss in Michigan, possibly the oldest swing bridge in the United States, and an extremely rare pinned Warren truss! | 
|
New Richmond Railroad Bridge
|
| Railroad (CSX) Over Kalamazoo River | New Richmond: Allegan County, Michigan | Metal Deck Girder, Movable: Swing (Bobtail) |
Total Length: 435 ft Roadway Width: 8 ft Main Spans: 6 |
1907 By: American Bridge Company of New York, New York | This deck plate girder is an old swing bridge that had its mechanics removed. | 
|
New Richmond Railroad Overpass
|
| Railroad (CSX) Over 57th Street (Old Allegan Road) | New Richmond: Allegan County, Michigan | Metal Stringer (Multi-Beam), Fixed | Main Spans: 1 | 1907 By: King Bridge Company of Cleveland, Ohio | A good example of a railroad steel stringer built by the King Bridge Company of Cleveland, Ohio. | 
|
Rabbit River Railroad Bridge
|
| Railroad (Abandoned) Over Rabbit River | Rural: Allegan County, Michigan | Metal Through Girder, Fixed | Main Spans: 1 | By: Unknown | A tradtional railroad plate girder is no longer used by trains but is in good condition. | 
| X |
Washington Avenue Bridge
|
| Washington Avenue Over North Branch Black River | Near Holland: Allegan County, Michigan | Concrete T-Beam, Fixed |
Total Length: 30.8 ft Main Span Length: 30 ft Roadway Width: 58 ft Main Spans: 1 |
1928 By: Unknown | A good example of an attractive small-scale bridge design that was built in the 1920s and demolished in 2010. | 
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