US 101 over MUD BAY


+47.04490, -122.99069
47°02'42" N, 122°59'26" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:US 101 over MUD BAY
Structure number:0005677B0000000
Location:1.3 S JCT SR 8
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:40.0 ft. [12.2 m]
Total length:290.0 ft. [88.4 m]
Roadway width between curbs:31.2 ft. [9.5 m]
Deck width edge-to-edge:33.5 ft. [10.2 m]
Owner:State Highway Agency [01]
Year built:1958
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:8
Main spans material:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2016 

Status:Open, no restriction [A]
Average daily traffic:18,909 [as of 2012]
Truck traffic:8% 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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:55.4 tons [50.4 metric tons]
Inventory rating:33.7 tons [30.6 metric tons]
Sufficiency rating:83.1

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201683.1Not deficientSatisfactorySatisfactorySatisfactory18909
April 201483.1Not deficientSatisfactorySatisfactorySatisfactory18909
May 201283.1Not deficientSatisfactorySatisfactorySatisfactory19356
May 201083.0Not deficientSatisfactorySatisfactorySatisfactory20153
June 200854.7Structurally deficientSatisfactorySatisfactoryPoor20153
August 200655.8Structurally deficientSatisfactorySatisfactoryPoor13582
September 200448.4Structurally deficientSatisfactorySatisfactoryPoor13582
July 200248.4Structurally deficientSatisfactorySatisfactoryPoor13582
March 200048.4Structurally deficientSatisfactorySatisfactoryPoor13448
June 199865.2Functionally obsoleteSatisfactorySatisfactoryFair13448
April 199666.4Functionally obsoleteSatisfactorySatisfactoryFair13448
July 199477.7Functionally obsoleteSatisfactorySatisfactorySatisfactory13448
July 199278.0Functionally obsoleteSatisfactorySatisfactorySatisfactory10400