US 1 NB/CHLSEA LW over HWY CHELSEA LOCAL STS

Map 

Facts 

Name:	US 1 NB/CHLSEA LW over HWY CHELSEA LOCAL STS
Structure number:	B160174WYMPANBI
Old structure number:	MPA896C00111 (from 1992 edition)
Location:	TOBIN BRIDGE
Purpose:	Carries highway over highway
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) [12]
Tolls:	Yes [1]
Length of largest span:	103.0 ft. [31.4 m]
Total length:	2829.2 ft. [862.3 m]
Roadway width between curbs:	36.1 ft. [11.0 m]
Deck width edge-to-edge:	41.7 ft. [12.7 m]
Vertical clearance above deck:	16.1 ft. [4.9 m]
Vertical clearance below bridge:	20.0 ft. [6.1 m]
Owner:	Other State Agencies [21]
Year built:	1950
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:	30
Main spans material:	Steel [3]
Main spans design:	Girder and floorbeam system [03]
Deck type:	Closed Grating [4]
Wearing surface:	Bituminous [6]

2010 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	44,700 [as of 2007]
Truck traffic:	10% of total traffic
Deck condition:	Fair [5 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	38.6 tons [35.1 metric tons]
Inventory rating:	25.7 tons [23.4 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	53.2
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$45,590,000

2000 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	35,600 [as of 1997]
Truck traffic:	10% of total traffic
Deck condition:	Poor [4 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	34.7 tons [31.5 metric tons]
Inventory rating:	28.7 tons [26.1 metric tons]
Evaluation:	Structurally deficient [1]
Sufficiency rating:	57.9
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$26,607,000

1992 Inspection 

Status:	Open, no restriction [A]
Average daily traffic:	50,396 [as of 1990]
Truck traffic:	10% of total traffic
Deck condition:	Satisfactory [6 out of 9]
Superstructure condition:	Satisfactory [6 out of 9]
Substructure condition:	Satisfactory [6 out of 9]
Scour condition:	Bridge not over waterway. [N]
Operating rating:	53.5 tons [48.6 metric tons]
Inventory rating:	35.6 tons [32.4 metric tons]
Evaluation:	Functionally obsolete [2]
Sufficiency rating:	62.0
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:	$26,607,000

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