US 169 over Mississippi River

Map 

Facts 

Name:	US 169 over Mississippi River
Structure number:	4380
Location:	At North County Line
Purpose:	Carries highway and pedestrian walkway over waterway
Route classification:	Other Principal Arterial (Urban) [14]
Length of largest span:	107.9 ft. [32.9 m]
Total length:	995.1 ft. [303.3 m]
Roadway width between curbs:	56.1 ft. [17.1 m]
Deck width edge-to-edge:	79.7 ft. [24.3 m]
Owner:	State Highway Agency [01]
Year built:	1929
Historic significance:	Bridge is on the National Register of Historic Places [1]
Design load:	MS 22.5 / HS 25 [9]
Number of main spans:	10
Main spans material:	Concrete [1]
Main spans design:	Arch - Deck [11]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Low slump Concrete [4]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	46,000 [as of 2008]
Truck traffic:	3% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Good [7 out of 9]
Channel protection:	Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:	Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:	109.8 tons [99.8 metric tons]
Inventory rating:	69.9 tons [63.5 metric tons]
Sufficiency rating:	84.0

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	41,000 [as of 1996]
Truck traffic:	3% of total traffic
Deck condition:	Very Good [8 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
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]
Scour condition:	Countermeasures have been installed to mitigate an existing problem with scour. [7]
Operating rating:	11.4 tons [10.4 metric tons]
Inventory rating:	69.3 tons [63.0 metric tons]
Sufficiency rating:	83.0

1992 Inspection 

Status:	Posted for load [P]
Average daily traffic:	32,500 [as of 1990]
Truck traffic:	2% of total traffic
Deck condition:	Poor [4 out of 9]
Superstructure condition:	Poor [4 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
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]
Scour condition:	Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:	6.2 tons [5.6 metric tons]
Inventory rating:	3.7 tons [3.4 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	4.0
Recommended work:	Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:	$5,248,000

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