US 30 BY (HWY 123) over MILL ST


+45.58373, -122.76751
45°35'01" N, 122°46'03" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 30 BY (HWY 123) over MILL ST
Structure number:06498 123 00027
Location:6.0 MI NW PORTLAND CC
Route classification:Minor Arterial (Urban) [16]
Length of largest span:89.9 ft. [27.4 m]
Total length:210.0 ft. [64.0 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:40.0 ft. [12.2 m]
Owner:State Highway Agency [01]
Year built:1931
Historic significance:Bridge is eligible for the National Register of Historic Places [2]
Design load:M 13.5 / H 15 [2]
Number of main spans:5
Main spans material:Steel [3]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:19,900 [as of 2014]
Truck traffic:8% 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:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:50.9 tons [46.3 metric tons]
Inventory rating:30.9 tons [28.1 metric tons]
Sufficiency rating:57.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$1,076,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201557.3FairSatisfactoryFairSatisfactory-19900
October 201358.1FairSatisfactoryFairSatisfactory-18200
October 201127.5FairSatisfactoryFairSatisfactoryFO18200
March 201027.5FairSatisfactoryFairSatisfactoryFO20700
March 200848.1FairSatisfactorySatisfactorySatisfactoryFO20700
March 200647.4FairSatisfactoryGoodSatisfactoryFO24100
November 200347.7FairSatisfactoryGoodSatisfactoryFO21527
November 200147.8GoodGoodGoodGoodFO20900
November 199956.8GoodGoodGoodGood-20601
November 199756.8GoodGoodGoodGood-20600
November 199557.8GoodGoodGoodGood-18400
November 199363.4GoodGoodGoodGood-18400
November 199161.4FairGoodGoodSatisfactory-18400

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.6305676300
Steel Protective Coatingsq. ft.10,3769,3381,03800
Reinforced Concrete Stringerlinear ft.42000315105
Steel Floor Beamlinear ft.1,3501,350000
Steel Protective Coatingsq. ft.1,3501,350000
Reinforced Concrete Floor Beamlinear ft.132125700
Steel Columneach1812510
Steel Protective Coatingsq. ft.3,6142,3491,0841810
Reinforced Concrete Abutmentlinear ft.8076400
Pourable Jointlinear ft.1601204000
Movable Bearingeach33000
Enclosed/Concealed Bearingeach99000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.540540000
Reinforced Concrete Slabsq. ft.8,4357,1694228440