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US52 Running Slough Bridge

Photos 

Looking North

From Sabula Island.

Photo taken by Quinn Phelan in May 2010

Enlarge

BH Photo #164583

Map 

Street View 

Description 

Bridge was on Iowa approach causeway to Savanna-Sabula Bridge.

While plans were being prepared to replace this bridge, one of its piers was undermined by floodwaters on February 27, 2018, and the whole bridge sagged. It was immediately closed, and subsequently demolished.

This closed the whole Mississippi River crossing, including the New Savanna-Sabula Bridge. There is a marked 36-mile road detour, and also ferry and bus services available.

The replacement bridge is proving troublesome to build, due to unstable soils and new river flooding in Summer, 2018. Therefore there is no prediction as to when the Mississippi River crossing between Savanna and Sabula can reopen.

Facts 

Overview
Through truss bridge over Running Slough (Mississippi River Overflow) on US 52/IA 64 in Sabula
Location
Sabula, Jackson County, Iowa
Status
Closed due to washout; replacement under construction
History
Built 1933; rehabilitated 1985; lost February 27, 2018 when it sagged after a pier was undermined
Design
Riveted Pratt through truss
Dimensions
Length of largest span: 120.1 ft.
Total length: 342.2 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 13.8 ft.
Approximate latitude, longitude
+42.07540, -90.17573   (decimal degrees)
42°04'31" N, 90°10'33" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/733632/4662007 (zone/easting/northing)
Quadrangle map:
Savanna
Average daily traffic (as of 2015)
2,070
Inventory numbers
IA 29950 (Iowa bridge number)
BH 13720 (Bridgehunter.com ID)
Inspection report (as of July 2016)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Fair (5 out of 9)
Sufficiency rating: 29.6 (out of 100)
View more at BridgeReports.com

Update Log 

  • July 11, 2018: Updated by Roger Deschner: Bridge lost when pier undermined in flood
  • May 31, 2018: Updated by Luke: Demolished
  • March 2, 2018: Updated by Luke: Closed; Will probably be replaced.
  • May 2, 2012: New photos from J.R. Manning
  • May 8, 2010: New photo from Quinn Phelan
  • April 20, 2010: Updated by Nathan Holth: Updated GPS and info.

Related Bridges 

Sources 

Comments 

US52 Running Slough Bridge
Posted March 2, 2018, by Luke