Thayer Viaduct

Photos 

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Overview Photos taken by Ken Franke

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View from below

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Builder's plaque Built by M.S. Cartter & Co. St Louis.

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Steel fabricator Passaic R.M. Co.

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State highway marker

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Lower chord Photo taken by James Baughn in May 2009 View high-res version

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North approach Photo taken by James Baughn in May 2009 View high-res version

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North portal Photo taken by James Baughn in May 2009 View high-res version

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South portal Photo taken by James Baughn in May 2009 View high-res version

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View from north Photo taken by James Baughn in May 2009 View high-res version

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Walkway Photo taken by James Baughn in May 2009 View high-res version

Map 

Vicinity map Map links: Google Maps Yahoo! Maps TopoZone Terraserver USA

Facts 

Overview

Through truss bridge over the BNSF railroad and Two Mile Creek on MO 19/Business US 63 in Thayer

Location

Oregon County, Missouri

Status

Open to two-lane traffic

History

Built by M.S. Cartter & Co. of St. Louis

Builders

- M.S. Cartter & Co. (Main span)
- Martin Wunderlich (Substructure and approaches)

Design

Main span: Pin-connected, 8-panel Pratt through truss

Dimensions

Length of largest span: 155.8 ft.
Total length: 305.0 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 15.3 ft.

Approximate latitude, longitude

+36.53327, -91.54846   (decimal degrees)
36°31'60" N, 91°32'54" W   (degrees°minutes'seconds")

Approximate UTM coordinates

15/629941/4044078 (zone/easting/northing)

Land survey

T. 24 N., R. 5 W., Sec. 30

USGS topographic map

Thayer

Inventory numbers

MoDOT H-289AMONBI 4938 (Missouri Dept. of Transportation bridge number)
BH 22237 (Bridgehunter.com ID)

Inspection (as of 01/2008)

Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 35.1 (out of 100)

Average daily traffic (as of 2006)

1,808

Categories 

Update Log 

• June 12, 2009: New photos from James Baughn
• April 7, 2006: Posted photos from Ken Franke

Sources 

• Ken Franke
• Missouri Historic Bridge Inventory
• James Baughn - webmaster [at] bridgehunter [dot] com

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