Facts 

Overview
Pony truss bridge over Rock River on Rockriver Road
Location
Alger County, Michigan
Status
Open to traffic
History
Built 1921
Design
Pony truss
Dimensions
Length of largest span: 46.9 ft.
Total length: 53.8 ft.
Deck width: 20.0 ft.
Inventory number
BH 19946 (Bridgehunter.com ID)
Inspection (as of 09/2007)
Deck condition rating: Excellent (9 out of 9)
Superstructure condition rating: Excellent (9 out of 9)
Substructure condition rating: Excellent (9 out of 9)
Sufficiency rating: 99.9 (out of 100)
Average daily traffic (as of 2006)
145

Categories 

Alger County, Michigan (8)
Built 1921 (269)
Built during 1920s (4,735)
Michigan (433)
Open (22,113)
Owned by county (14,331)
Pony truss (9,509)
Skewed (3,682)
Span length 25-50 feet (6,213)
Structurally deficient (12,038)
Total length 50-75 feet (5,033)
Truss (16,177)