SR 529 over STEAMBOAT SLOUGH

Map

Coordinates:
+48.03489, -122.18150
48°02'06" N, 122°10'53" W

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	SR 529 over STEAMBOAT SLOUGH
Structure number:	0004373A0000000
Location:	6.6 N JCT I-5
Purpose:	Carries highway and pedestrian walkway over highway and waterway
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) `[12]`
Length of largest span:	182.1 ft. `[55.5 m]`
Total length:	910.1 ft. `[277.4 m]`
Roadway width between curbs:	27.9 ft. `[8.5 m]`
Deck width edge-to-edge:	34.1 ft. `[10.4 m]`
Vertical clearance above deck:	15.1 ft. `[4.6 m]`
Vertical clearance below bridge:	3.3 ft. `[1.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1954
Historic significance:	Bridge is possibly eligible for the National Register of Historic Places `[3]`
Design load:	MS 18 / HS 20 `[5]`
Number of main spans:	2
Main spans material:	Steel `[3]`
Main spans design:	Movable - Swing `[17]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Epoxy Overlay `[5]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	16,379 `[as of 2016]`
Truck traffic:	6% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Deck geometry appraisal:	Basically intolerable requiring high priority of corrrective action `[3]`
Underclearances appraisal:	Basically intolerable requiring high priority of corrrective action `[3]`
Water adequacy appraisal:	Equal to present desirable criteria `[8]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
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]`
Sufficiency rating:	54.4
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$11,648,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
December 2018	Fair	Satisfactory	Fair	Satisfactory	16379	54.4
July 2016	Fair	Satisfactory	Fair	Satisfactory	14943	57.7
July 2014	Fair	Satisfactory	Fair	Satisfactory	14943	57.7
July 2012	Fair	Satisfactory	Fair	Good	15190	57.6
July 2010	Fair	Satisfactory	Fair	Good	15839	57.5
July 2008	Fair	Satisfactory	Fair	Good	15839	57.5
July 2006	Fair	Satisfactory	Fair	Good	10955	58.3
September 2004	Fair	Satisfactory	Fair	Good	10955	58.3
November 2003	Fair	Satisfactory	Satisfactory	Good	10955	69.6
April 2001	Fair	Satisfactory	Fair	Good	10955	58.3
November 2000	Fair	Satisfactory	Fair	Good	10955	58.3
May 1999	Fair	Satisfactory	Satisfactory	Good	10955	69.6
April 1997	Fair	Good	Satisfactory	Good	10955	69.6
February 1996	Fair	Good	Satisfactory	Good	10955	69.9
December 1994	Fair	Good	Satisfactory	Good	10955	69.9
May 1993	Fair	Good	Satisfactory	Good	12950	73.7
November 1991	Poor	Serious	Good	Good	9900	70.0

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	165	165	0	0	0
Steel Protective Coating	sq. ft.	1,032	1,032	0	0	0
Reinforced Concrete Girder/Beam	linear ft.	3,528	3,513	0	15	0
Steel Stringer	linear ft.	3,848	3,781	67	0	0
Steel Protective Coating	sq. ft.	24,069	24,069	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	25,480	25,425	23	0	32
Wearing Surfaces	sq. ft.	25,480	0	22,252	128	3,100
Superstructure
Steel Truss	linear ft.	1,312	1,014	0	298	0
Steel Protective Coating	sq. ft.	82,067	82,067	0	0	0
Steel Floor Beam	linear ft.	1,116	1,110	0	6	0
Steel Protective Coating	sq. ft.	6,980	6,980	0	0	0
Steel Gusset Plate	each	112	109	0	3	0
Substructure
Reinforced Concrete Column	each	48	48	0	0	0
Reinforced Concrete Pier Wall	linear ft.	266	266	0	0	0
Reinforced Concrete Abutment	linear ft.	64	64	0	0	0
Reinforced Concrete Pile Cap/Footing	linear ft.	4	3	0	1	0
Reinforced Concrete Pile	each	9	3	0	6	0
Reinforced Concrete Pier Cap	linear ft.	396	396	0	0	0
Joints
Open Joint	linear ft.	756	0	280	364	112
Assembly without Seal Joint	linear ft.	56	0	56	0	0
Bearings
Movable Bearing	each	8	8	0	0	0
Enclosed/Concealed Bearing	each	1	1	0	0	0
Fixed Bearing	each	4	4	0	0	0
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	1,312	1,308	4	0	0