Rating:
3 votes

Court Avenue Bridge

Photos 

Photo taken by Historic American Engineering Record

BH Photo #115376

Map 

Street Views 

Description 

This outstanding multiple-span concrete arch bridge carries Court Avenue over the Des Moines River in northern Des Moines. The concrete-filled spandrel arch dates to 1916. Located in the heart of Iowa's capital city, the Court Avenue crossing was a pivotal one, and the current bridge was preceded by a series of earlier spans, beginning in 1856-57. The crossing's early history was punctuated with structural failures, but eventually, the Des Moines City Council concluded that a new permanent structure was needed to accommodate the city's growing citizenry and heavier vehicular traffic. Even before ground was broken for the new foundations, an interesting dilemma developed surrounding the bridge's design. The conflict, as reported by The Des Moines Daily Tribune, involved whether a design produced by Des Moines engineer James B. Marsh should be used instead of plans generated in the county engineering department. In defense of his decision, Mayor MacVicar unknowingly caught himself up in an uncomfortable situation. Both sets of plans were submitted for the new Court Avenue Bridge as well as the Grand Avenue Bridge, erected a few months earlier. The county engineer's plans were selected for Grand Avenue whereas Marsh plans were chosen for the Court Avenue crossing. MacVicar, after selecting Marsh as the designer for the Court Avenue project, claimed the Marsh plans were superior "as regards beauty, harmony with its surroundings, cost of construction and strength" to the county's specifications. In addition, the Marsh plans were supposedly more economical overall, even with the extra architectural fees. Herein, reporters claimed, laid the problem. If the Marsh bridge plan was both visually and financially preferable, why did the council agree to use county plans for the Grand Avenue structure? MacVicar stood steadfastly by his decision; the bridge was erected by the Des Moines-based Koss Construction Company in 1918 without further delays. The 496-foot Court Avenue Bridge was formally opened to the public on July 10, 1918, with thousands of people in attendance. Now over seventy-five years old, the bridge has continued to ride its tidal wave of success. The arch has retained a high degree of structural integrity, with no major alterations of note. A 1981 reconstruction only involved minor maintenance-related repairs. Over time, the original impact of the bridge has not been altered in any way, securing its significance as both a major river crossing and as a Des Moines transportation and architectural-related resource [adapted from Crow-Dolby and Fraser 1993]

Facts 

Overview
Five-span arch bridge over Des Moines River on Court Avenue in Des Moines
Location
Polk County, Iowa
Status
Open to traffic
History
Built 1917; rehabilitated 1982
Builders
- James Barney Marsh of North Lake, Wisconsin (Designer)
- Koss Construction Co. of Des Moines, Iowa
Design
Closed-spandrel arch
Dimensions
Length of largest span: 91.9 ft.
Total length: 496.1 ft.
Deck width: 68.9 ft.
Recognition
Posted to the National Register of Historic Places on May 15, 1998
Approximate latitude, longitude
+41.58572, -93.61769   (decimal degrees)
41°35'09" N, 93°37'04" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/448513/4603965 (zone/easting/northing)
Quadrangle map:
Des Moines SE
Inventory numbers
NRHP 98000489 (National Register of Historic Places reference number)
IA 3690 (Iowa bridge number)
BH 14246 (Bridgehunter.com ID)
Inspection (as of 06/2015)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 77.4 (out of 100)
Average daily traffic (as of 2012)
3,920

Update Log 

  • May 31, 2017: New photos from Daniel Barnes
  • September 6, 2016: New Street View added by Dana and Kay Klein
  • January 22, 2014: New Street View added by Luke Harden
  • May 10, 2012: Updated by Luke Harden: Added category "HAER documented"
  • September 19, 2011: New photos from Jason Smith
  • August 17, 2011: Updated by Clark Vance: Added Marsh catagory
  • August 16, 2011: Updated by Luke Harden: Added description
  • June 16, 2008: New photos from Historic American Engineering Record

Related Bridges 

Sources 

  • HAER IA-70 - Court Avenue Bridge
  • Historic American Engineering Record
  • Luke
  • Clark Vance - cvance [at] dogmail [dot] com
  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Wikipedia
  • Dana and Kay Klein
  • Daniel Barnes

Comments 

Court Avenue Bridge
Posted February 22, 2009, by Matt Mazan (mmazan1 [at] yahoo [dot] com)

new photos taken 02/22/09