MORRISON ST over WILLAMETTE RIVER

Map 

Facts 

Name:	MORRISON ST over WILLAMETTE RIVER
Structure number:	02758 000000000
Location:	WILLAMETTE RIVER MP 12.8
Purpose:	Carries highway and pedestrian walkway over waterway
Route classification:	Minor Arterial (Urban) [16]
Length of largest span:	339.9 ft. [103.6 m]
Total length:	759.9 ft. [231.6 m]
Roadway width between curbs:	78.1 ft. [23.8 m]
Deck width edge-to-edge:	89.9 ft. [27.4 m]
Vertical clearance above deck:	16.4 ft. [5.0 m]
Vertical clearance below bridge:	68.9 ft. [21.0 m]
Owner:	County Highway Agency [02]
Year built:	1958
Historic significance:	Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:	MS 18 / HS 20 [5]
Main span material:	Steel [3]
Main span design:	Movable - Bascule [16]
Deck type:	Open Grating [3]
Wearing surface:	Other [9]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	53,835 [as of 2006]
Truck traffic:	10% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Fair [5 out of 9]
Substructure condition:	Fair [5 out of 9]
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Pier/abutment protection:	In place and functioning [2]
Scour condition:	Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	51.9 tons [47.2 metric tons]
Inventory rating:	30.9 tons [28.1 metric tons]
Sufficiency rating:	66.8

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	22,706 [as of 1998]
Truck traffic:	10% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Very Good [8 out of 9]
Substructure condition:	Very Good [8 out of 9]
Channel protection:	Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Pier/abutment protection:	In place and functioning [2]
Scour condition:	Bridge is scour critical; bridge foundations determined to be unstable. [3]
Operating rating:	51.5 tons [46.8 metric tons]
Inventory rating:	30.7 tons [27.9 metric tons]
Sufficiency rating:	83.5
Recommended work:	Widening of existing bridge with deck rehabilitation or replacement. [34]
Estimated cost of work:	$2,060,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	41,130 [as of 1989]
Truck traffic:	10% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Good [7 out of 9]
Substructure condition:	Very Good [8 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]
Pier/abutment protection:	In place and functioning [2]
Scour condition:	Scour calculation/evaluation has not been made. [6]
Operating rating:	39.6 tons [36.0 metric tons]
Inventory rating:	24.8 tons [22.5 metric tons]
Sufficiency rating:	73.7

Comments