MISSION ST over SOUTH 21ST STREET

Map

Coordinates:
+40.42358, -79.97669
40°25'25" N, 79°58'36" W

Source: National Bridge Inventory (1992, 2000, 2010 editions)
Information not verified. Use at your own risk.

Name:	MISSION ST over SOUTH 21ST STREET
Structure number:	027301000030610
Location:	301061 MISSION ST WEST
Purpose:	Carries highway and pedestrian walkway over highway
Route classification:	Local (Urban) `[19]`
Length of largest span:	160.1 ft. `[48.8 m]`
Total length:	394.0 ft. `[120.1 m]`
Roadway width between curbs:	22.0 ft. `[6.7 m]`
Deck width edge-to-edge:	36.1 ft. `[11.0 m]`
Vertical clearance below bridge:	45.9 ft. `[14.0 m]`
Skew angle:	12°
Owner:	City or Municipal Highway Agency `[04]`
Year built:	1939
Year reconstructed:	1982
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	M 13.5 / H 15 `[2]`
Number of main spans:	3
Main spans material:	Steel continuous `[4]`
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]`

Status:	Posted for load `[P]`
Average daily traffic:	650 `[as of 2009]`
Truck traffic:	4% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Fair `[5 out of 9]`
Scour condition:	Bridge not over waterway. `[N]`
Operating rating:	44.9 tons `[40.8 metric tons]`
Inventory rating:	27.0 tons `[24.5 metric tons]`
Sufficiency rating:	66.1
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$1,000

Status:	Posted for load `[P]`
Average daily traffic:	650 `[as of 1999]`
Truck traffic:	4% of total traffic
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Satisfactory `[6 out of 9]`
Substructure condition:	Fair `[5 out of 9]`
Scour condition:	Bridge not over waterway. `[N]`
Operating rating:	44.6 tons `[40.5 metric tons]`
Inventory rating:	26.7 tons `[24.3 metric tons]`
Evaluation:	Functionally obsolete `[2]`
Sufficiency rating:	61.8
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$755,000

Status:	Posted for load `[P]`
Average daily traffic:	600 `[as of 1991]`
Deck condition:	Fair `[5 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Scour condition:	Bridge not over waterway. `[N]`
Operating rating:	9.9 tons `[9.0 metric tons]`
Inventory rating:	8.9 tons `[8.1 metric tons]`
Evaluation:	Functionally obsolete `[2]`
Sufficiency rating:	24.3
Recommended work:	Other structural work, including hydraulic replacements. `[38]`
Estimated cost of work:	$755,000