US 169 S over MISSOURI RVR, CST FOURTH

Map 

Facts 

Name:	US 169 S over MISSOURI RVR, CST FOURTH
Structure number:	3807
Old structure number:	A4649 4 (from 1992 edition)
Location:	S 31 T 50 N R 33 W
Purpose:	Carries highway over highway, waterway, and railroad
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:	540.1 ft. [164.6 m]
Total length:	2548.0 ft. [776.6 m]
Roadway width between curbs:	47.9 ft. [14.6 m]
Deck width edge-to-edge:	55.4 ft. [16.9 m]
Vertical clearance above deck:	14.4 ft. [4.4 m]
Vertical clearance below bridge:	51.8 ft. [15.8 m]
Skew angle:	5°
Owner:	State Highway Agency [01]
Year built:	1955
Historic significance:	Historical significance is not determinable at this time [4]
Design load:	MS 18 / HS 20 [5]
Number of main spans:	3
Main spans material:	Steel [3]
Main spans design:	Arch - Thru [12]
Deck type:	Concrete Cast-in-Place [1]
Wearing surface:	Low slump Concrete [4]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	34,472 [as of 2008]
Truck traffic:	20% of total traffic
Deck condition:	Good [7 out of 9]
Superstructure condition:	Fair [5 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]
Pier/abutment protection:	In place and functioning [2]
Scour condition:	Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	35.2 tons [32.0 metric tons]
Inventory rating:	25.3 tons [23.0 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	51.6
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$58,150,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	23,490 [as of 1997]
Truck traffic:	5% 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]
Pier/abutment protection:	In place and functioning [2]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	38.6 tons [35.1 metric tons]
Inventory rating:	24.8 tons [22.5 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	60.5
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$17,738,000

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