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ST 9 HUNTINGTN AV over COMB I 90 & MBTA/CSX

Suffolk County, Massachusetts

Map

Coordinates:
+42.34778, -71.07889
42°20'52" N, 71°04'44" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:ST 9 HUNTINGTN AV over COMB I 90 & MBTA/CSX
Structure number:B160494T8DOTNBI
Location:.1 MI S.PRU CENTER S57
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:79.1 ft. [24.1 m]
Total length:307.1 ft. [93.6 m]
Roadway width between curbs:101.1 ft. [30.8 m]
Deck width edge-to-edge:123.4 ft. [37.6 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:51°
Owner:State Highway Agency [01]
Year built:1965
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:5
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: June 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:42,900 [as of 2015]
Truck traffic:11% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:45.9 tons [41.7 metric tons]
Inventory rating:37.1 tons [33.7 metric tons]
Sufficiency rating:71.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$19,898,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
June 201571.6FairFairSatisfactoryFairFO42900
June 201378.8FairFairSatisfactoryFairFO18000
March 201175.3FairFairSatisfactoryFairFO19900
March 200975.3FairFairSatisfactoryFairFO19900