THIRD ST over CHINA BASIN (Route: 0)
Num: 34C0025x
Open: no restriction [A]
Built: 1932, Reconstructed: 1998
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Concrete continuous [2] Slab [01]
Deck: Open Grating [3] with Wearing Surface: Other [9]

Bridge Dimensions
Length: 89.9 m = 295.0 ft
Main Spans: 1 at 43.4 m = 142.4 ft
Approach Spans: 5
Skew: 0
Width, Roadway: 17.7 m = 58.1 ft (5 Lanes) and Out-To-Out: 22 m = 72.2 ft for a 19.8 m = 65.0 ft approaching roadway.
Vertical Clearance: 5.69 m = 18.7 ft and Navigational Clearance: 0.1 m = 0.3 ft

Location
San Francisco [67000]: San Francisco County [075], California [06]
Owned by County Highway Agency [02], DOT District: 4
S OF BERRY ST

Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Good [7]
Loading
Design:
Operating: 50.5 metric ton = 55.6 tons (Load Factor(LF) [1])
Inventory: 30.1 metric ton = 33.1 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: December 2020 [1220] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 25000 (2015) and Trucks: 30%
Future ADT: 36914 (In 2042 )

FOURTH ST over CHINA BASIN (Route: 0)
Num: 34C0027x
Open: no restriction [A]
Built: 1917, Reconstructed: 2005
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Concrete continuous [2] Slab [01]
Deck: Open Grating [3] with Wearing Surface:

Bridge Dimensions
Length: 58.3 m = 191.3 ft
Main Spans: 1 at 29 m = 95.1 ft
Approach Spans: 6
Skew: 0
Width, Roadway: 12.2 m = 40.0 ft (3 Lanes) and Out-To-Out: 17.4 m = 57.1 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 5.56 m = 18.2 ft and Navigational Clearance: 0.1 m = 0.3 ft

Location
San Francisco [67000]: San Francisco County [075], California [06]
Owned by County Highway Agency [02], DOT District: 4
S OF BERRY ST

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 54.1 metric ton = 59.5 tons (Unknown [A])
Inventory: 32.4 metric ton = 35.6 tons (Unknown [A])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: December 2020 [1220] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 20000 (2017) and Trucks: 20%
Future ADT: 30707 (In 2042 )