MARSH AVE over US 30


+42.00726, -92.99986
42°00'26" N, 92°59'59" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MARSH AVE over US 30
Structure number:000000000601500
Location:1.0 MI. E OF JCT. IA #330
Purpose:Carries highway over highway
Route classification:Minor Collector (Rural) [08]
Length of largest span:97.1 ft. [29.6 m]
Total length:268.1 ft. [81.7 m]
Roadway width between curbs:30.2 ft. [9.2 m]
Deck width edge-to-edge:33.1 ft. [10.1 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1995
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Prestressed concrete [5]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:1,030 [as of 2017]
Truck traffic:11% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:88.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2017GoodVery GoodVery GoodGood103088.4
October 2015GoodVery GoodVery GoodVery Good20093.8
October 2013GoodExcellentExcellentExcellent11094.0
October 2011GoodExcellentExcellentExcellent15094.0
October 2009GoodExcellentExcellentExcellent11095.0
October 2007GoodExcellentExcellentExcellent11095.0
September 2005GoodExcellentExcellentExcellent11095.0
December 2003GoodExcellentExcellentExcellent15095.0
November 2001GoodExcellentExcellentExcellent15095.0
May 1999GoodExcellentExcellentExcellent11095.0
January 1997GoodExcellentExcellentExcellent11095.0
July 1994GoodExcellentExcellentExcellent54095.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.1,3201,320000
Reinforced Concrete Decksq. ft.8,8988,898000
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.67561100
Reinforced Concrete Pier Caplinear ft.9797000
Pourable Jointlinear ft.6155060
Elastomeric Bearingeach2020000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.536536000