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Zinn Bridge

Miami County, Indiana

Photos 

Photo from SHAARD

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BH Photo #155930

Map 

Description 

Of the 4 two-span Eel River bridges, sadly this one didn't survive.

View Uglybridges.com report

Facts 

Overview
Lost through truss bridge over Eel River on CR 500 E
Location
Miami County, Indiana
Status
Replaced by new bridge
History
Built ca. 1884; rehabilitated 1975; replaced 1993
Builder
- Indianapolis Bridge Co.
Design
Pinned Pratt through truss
Dimensions
Length of largest span: 104.0 ft.
Total length: 213.9 ft.
Deck width: 18.0 ft.
Vertical clearance above deck: 17.5 ft.
Also called
Eel River CR 500E Bridge
Old County Bridge #53
Pettysville Bridge
Approximate latitude, longitude
+40.87166, -85.98087   (decimal degrees)
40°52'18" N, 85°58'51" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/585876/4525009 (zone/easting/northing)
Quadrangle map:
Richvalley
Inventory numbers
INNBI 5200040 (Indiana bridge number on the National Bridge Inventory)
BH 39452 (Bridgehunter.com ID)
Inspection (as of 04/1991)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 29.5 (out of 100)
Average daily traffic (as of 1991)
100

Categories 

19th Century (6,154)
Built during 1880s (1,637)
Eel River (Northern Indiana) (32)
Indiana (4,196)
Indianapolis Bridge Co. (12)
Lost (18,579)
Lost 1993 (431)
Lost during 1990s (3,704)
Miami County, Indiana (68)
 Pratt through truss (4,568)
Pratt truss (7,965)
Replaced by new bridge (12,299)
Span length 100-125 feet (4,007)
Structurally deficient (18,357)
Through truss (12,860)
Total length 175-250 feet (3,741)
Truss (29,373)

Update Log 

  • April 19, 2017: Updated by Tony Dillon: Added historic name as per county engineer comment
  • February 21, 2010: Updated by Anthony Dillon: Added builder and truss type, changed other information.
  • February 8, 2009: Added by James Baughn

Sources 

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Comments 

Zinn Bridge
Posted April 19, 2017, by Tony Dillon (spansaver [at] hotmail [dot] com)

I assume then that the beautiful cast portal bracings have probably survived in one form or another.

Eel River Bridge
Posted April 19, 2017, by Kenneth Einselen (in52engr [at] miamicountyiin [dot] gov)

This bridge had several components that were wrought iron. The contractor allowed local blacksmithing enthusiasts to salvage much of the wrought iron. The wrought iron was then distributed to several historical sites that had blacksmiths for use in the blacksmith shops.

Eel River Bridge
Posted April 19, 2017, by Kenneth Einselen (in52engr [at] miamicountyin [dot] gov)

This bridge is locally referred to as the ZINN BRIDGE.