Rating:
1 vote

Imboden Bridge

Lawrence County, Arkansas, and Randolph County, Arkansas

Photos 

Overview of west approach

Photo provided by the Arkansas Highway & Transportation Department

BH Photo #100617

Map 

Street View 

Description 

Designed in 1936 and built in 1937 by C.F. Lytle of Sioux City, Iowa, the bridge at Imboden is an interesting example of State Highway Department bridge design in the later 1930s and may be compared with the bridge over the North Fork River. Both involve the economical steel deck truss with concrete deck, though the Imboden bridge uses three pony trusses where it spans the river.

-- Historic American Engineering Record

Facts 

Overview
Pony and deck truss bridge over Spring River and the Frisco Railroad on US 62 at Imboden
Location
Lawrence County, Arkansas, and Randolph County, Arkansas
Status
Open to two-lane traffic, with a pedestrian sidewalk
History
Built 1937 by C.F. Lytle of Sioux City, Iowa
Builder
- C.F. Lytle Co. of Sioux City, Iowa
Design
From south to north:
Concrete deck girder approach spans, total length 138 ft.
Three riveted, 11-panel Pratt deck trusses, each 112 ft.
Three riveted, 11-panel Parker pony trusses, each 112 ft.
Concrete deck girder approach spans, total length 240 ft.
Dimensions
Length of largest span: 112.0 ft.
Total length: 1,049.9 ft.
Deck width: 23.9 ft.
Recognition
Posted to the National Register of Historic Places on April 9, 1990
Also called
St. Louis-San Francisco Overpass
Approximate latitude, longitude
+36.20571, -91.17193   (decimal degrees)
36°12'21" N, 91°10'19" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/664339/4008313 (zone/easting/northing)
Quadrangle map:
Imboden
Average daily traffic (as of 2014)
3,200
Inventory numbers
AHTD 1984 (Arkansas Highway and Transportation Dept. bridge number)
NRHP 90000513 (National Register of Historic Places reference number)
BH 10412 (Bridgehunter.com ID)
Inspection report (as of August 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 21 (out of 100)
View more at BridgeReports.com

Categories 

11-panel truss (105)
Arkansas (1,785)
Built 1937 (858)
Built during 1930s (12,329)
C.F. Lytle Co. (4)
Concrete girder (1,099)
Deck girder (6,621)
Deck truss (2,050)
Girder (11,666)
HAER documented (1,138)
Have street view (30,435)
Lawrence County, Arkansas (19)
NR-listed (3,027)
Open (41,454)
 Owned by state (16,770)
Parker pony truss (398)
Parker truss (1,843)
Pony truss (17,555)
Pratt deck truss (434)
Pratt truss (10,848)
Randolph County, Arkansas (16)
Riveted (2,776)
Span length 100-125 feet (4,682)
Spring River (6)
Total length 1000-2500 feet (2,049)
Truss (38,327)
US 62 (86)

Update Log 

  • January 27, 2015: HAER photos posted by Dave King
  • March 5, 2011: New Street View added by J.P.
  • October 6, 2005: Posted additional photos from David Backlin

Sources 

  • David Backlin - us71 [at] cox [dot] net
  • AHTD
  • HAER AR-26 - St. Louis - San Francisco Bridge
  • J.P. - wildcatjon2000 [at] gmail [dot] com
  • HAER AR-26 - St. Louis - San Francisco Bridge, Spanning Spring River at U.S. Highway 62, Imboden, Lawrence County, AR
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Comments 

Imboden Bridge
Posted March 19, 2008, by Wanda Bennett (dwbenn [at] centurytel [dot] net)

I have walked and driven across this bridge every since I can remember. Love this old bridge as a part of everyday life in a small town. (Even if a flood happens)

Imboden Bridge
Posted December 11, 2005, by Crietia Brown (crietia_08 [at] yahoo [dot] com)

This bridge is like a part of my life every single day. I drive over this bridge at least twice a day and have ever since I was born. You cross this bridge going into Imboden of course coming from Pocahontas I live on Highway 62 going towards Pocahontas. It would be hard to say how many times I've actually crossed it.