I-5 (HWY 001) over COL SLOUGH & HWY 1 CONN


+45.58413, -122.67902
45°35'03" N, 122°40'44" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-5 (HWY 001) over COL SLOUGH & HWY 1 CONN
Structure number:08883 001 30622
Purpose:Carries highway over highway and waterway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:104.0 ft. [31.7 m]
Total length:1238.9 ft. [377.6 m]
Roadway width between curbs:109.9 ft. [33.5 m]
Deck width edge-to-edge:115.5 ft. [35.2 m]
Vertical clearance below bridge:21.3 ft. [6.5 m]
Skew angle:17°
Owner:State Highway Agency [01]
Year built:1964
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:12
Main spans material:Prestressed concrete continuous [6]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: December 2014 

Status:Open, no restriction [A]
Average daily traffic:91,700 [as of 2010]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Superior to present desirable criteria [9]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:57.9 tons [52.6 metric tons]
Inventory rating:35.0 tons [31.8 metric tons]
Sufficiency rating:88.2

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
December 201488.2Not deficientSatisfactorySatisfactorySatisfactory91700
January 201381.6Not deficientSatisfactorySatisfactorySatisfactory91700
December 201081.4Not deficientSatisfactorySatisfactorySatisfactory93900
December 200878.9Not deficientSatisfactorySatisfactorySatisfactory93900
December 200678.9Not deficientSatisfactorySatisfactorySatisfactory99400
December 200479.0Not deficientSatisfactorySatisfactorySatisfactory94900
February 200379.0Not deficientGoodSatisfactoryGood92400
February 200180.0Not deficientGoodSatisfactoryGood91800
February 199980.0Not deficientGoodGoodGood87100
February 199780.0Not deficientGoodGoodGood87100
February 199580.0Not deficientGoodGoodGood73100
February 199380.0Not deficientGoodGoodGood73100
February 199180.0Not deficientGoodGoodGood70500