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US 18 over MISSISSIPPI RIVER & IA 7

Map

Coordinates:
+43.04387, -91.17836
43°02'38" N, 91°10'42" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 18 over MISSISSIPPI RIVER & IA 7
Structure number:000000000020515
Location:IN MARQUETTE
Purpose:Carries highway over highway, waterway, and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:462.0 ft. [140.8 m]
Total length:2561.1 ft. [780.6 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:44.0 ft. [13.4 m]
Vertical clearance above deck:23.3 ft. [7.1 m]
Vertical clearance below bridge:59.1 ft. [18.0 m]
Owner:State Highway Agency [01]
Year built:1974
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Arch - Thru [12]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:10,400 [as of 2018]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:None present but re-evaluation suggested [5]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:74.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017FairSatisfactoryGoodGood1040074.0
April 2013FairSatisfactoryGoodGood810074.0
April 2011FairSatisfactoryGoodGood910074.0
April 2009FairSatisfactoryGoodGood860073.7
June 2007FairSatisfactoryGoodGood900074.0
July 2005GoodGoodGoodGood750075.0
July 2003GoodGoodGoodGood750075.0
August 1998FairGoodSatisfactorySatisfactory880075.0
January 1993FairSatisfactorySatisfactorySatisfactory910077.7
May 1989FairSatisfactoryFairGood680065.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.925925000
Steel Girder/Beamlinear ft.4,1814,181000
Steel Stringerlinear ft.7,8177,817000
Deck
Reinforced Concrete Decksq. ft.112,962112,962000
Superstructure
Steel Archlinear ft.925925000
Steel Secondary Cableeach1818000
Steel Floor Beamlinear ft.8,6118,611000
Steel Pin or Pin & Hangar Assemblyeach44000
Substructure
Reinforced Concrete Columneach1010000
Reinforced Concrete Pier Walllinear ft.8888000
Reinforced Concrete Abutmentlinear ft.8181000
Reinforced Concrete Pier Caplinear ft.438438000
Bearings
Movable Bearingeach2222000
Fixed Bearingeach1010000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.5,1245,124000