Photos 

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Overview, looking south

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Side view

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North end

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Wood planks

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On the bridge

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Looking north

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Close-up of north truss

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Close-up of south truss

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Lower joint

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Upper joint

Map 

Vicinity Map

Vicinity map

Map links:

Diagram 

Facts 

Overview
Two-span pony truss bridge over Little Crooked Creek at Glenallen in Glen Allen
Location
Bollinger County, Missouri
Status
Open to traffic on a paved road with a 3 ton weight limit
History
Built in 1905 or 1908 (depending on source). Replaced 1961 by a concrete bridge on Route ZZ, but the old bridge still remains in use.
Design
North span: Riveted, 4-panel, half-hip Pratt pony truss
South span: Riveted Warren pony truss
Dimensions
Length of largest span: 60.0 ft.
Total length: 102.0 ft.
Deck width: 12.1 ft.
Approximate latitude, longitude
+37.31660, -90.02679   (decimal degrees)
37°18'60" N, 90°01'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/763474/4134141 (zone/easting/northing)
Land survey
T. 31 N., R. 9 E., Sec. 35
USGS topographic map
Glenallen
Inventory numbers
MO 009-165500.1 (Missouri off-system bridge number)
MONBI 17880 (Missouri bridge number on the National Bridge Inventory)
BH 20877 (Bridgehunter.com ID)
Inspection (as of 01/2006)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Serious (3 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 19.9 (out of 100)
Average daily traffic (as of 2006)
100

Categories 

4-panel truss (46)
Bollinger County, Missouri (35)
Built during 1900s (2,520)
Half-hip (23)
Have diagram (35)
Missouri (2,598)
One-lane traffic (6,990)
Open (22,301)
Owned by county (14,359)
Pony truss (9,534)
Pratt pony truss (535)
Pratt truss (1,669)
Riveted (381)
Span length 50-75 feet (4,770)
Structurally deficient (12,077)
Total length 100-125 feet (2,509)
Truss (16,277)
Wooden deck (5,164)

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