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Mahoning Avenue Double Decker Viaduct

Mahoning County, Ohio

Photos 

Mahoning Viaduct over Mill Creek

HAER Documentation

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BH Photo #415848

Map 

Documents 

Historical Engineering Record - Double Deck Pratt over Mill Creek

PDF (143 KB)

Posted by Geoffrey Moreland

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Description 

This double-decker Pratt Through Truss was built in 1903, and refurbished with connecting eye-bars in 1930 by the American Bridge Company. This bridge is significant for its double-decker design, carrying Mahoning Avenue on top, and Tod Avenue below. This bridge was replaced sometime in 1990 as google earth reflects a road change based on primitive satellite images. According to NBI, the new bridge was built in 1997

Facts 

Overview
Through truss bridge over Mill Creek on CR 319
Location
Youngstown, Mahoning County, Ohio
Status
Replaced by a new bridge
History
Built 1903
Builders
- American Bridge Co. of New York
- Huston & Cleveland of Columbus, Ohio
Design
Double-Decker Pratt Through Truss
Dimensions
Length of largest span: 105.0 ft.
Total length: 108.9 ft.
Deck width: 23.3 ft.
Vertical clearance above deck: 15.9 ft.
Also called
Mill Creek Bridge
Mahoning Viaduct
Tod Avenue Bridge
CR319 Bridge
Approximate latitude, longitude
+41.10158, -80.67206   (decimal degrees)
41°06'06" N, 80°40'19" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/527537/4550085 (zone/easting/northing)
Quadrangle map:
Youngstown
Inventory numbers
OH 5058449 (Ohio bridge number)
ODOT 5058449 (Ohio Dept. of Transportation structure file number)
BH 35945 (Bridgehunter.com ID)

Categories 

American Bridge Co. (1,522)
Built 1903 (596)
Built during 1900s (7,267)
Double decker (66)
Eyebars (2)
Formerly NR-eligible (444)
HAER documented (1,107)
Huston & Cleveland (2)
Lost (25,070)
Lost 1997 (411)
Lost during 1990s (4,005)
Mahoning County, Ohio (44)
Ohio (3,431)
 Owned by city (5,501)
Pin-connected (3,932)
Pratt through truss (5,436)
Pratt truss (9,360)
Replaced (12)
Replaced by new bridge (16,854)
Span length 100-125 feet (4,410)
Structurally deficient (14,091)
Through truss (15,216)
Total length 100-125 feet (5,192)
Truss (33,019)
Youngstown, Ohio (23)

Update Log 

  • February 12, 2018: Updated by Christopher Finigan: Added category "Pin-connected"
  • January 5, 2018: Updated by Geoffrey Moreland: Photos/Document/Description/Classification/Location/GPS Coordintes

Sources 

  • Truss & Rivets

Comments 

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