GEYSERS RD over BIG SULPHUR CREEK (Route: 0)
Num: 20C0005x
Open: no restriction [A]
Built: 1909, Reconstructed: N/A [0000]
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] Truss - Thru [10]
Approach Span(s): Concrete [1] Slab [01]
Deck: Corrugated Steel [6] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 45.8 m = 150.3 ft
Main Spans: 1 at 39.7 m = 130.3 ft
Approach Spans: 1
Skew: 0
Width, Roadway: 4.1 m = 13.5 ft (1 Lanes) and Out-To-Out: 4.3 m = 14.1 ft for a 4.9 m = 16.1 ft approaching roadway.
Vertical Clearance: 6.48 m = 21.3 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Sonoma County [097], California [06]
Owned by County Highway Agency [02], DOT District: 4
18.6 MI N OF SH 128

Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design:
Operating: 40.5 metric ton = 44.6 tons (Allowable Stress(AS) [2])
Inventory: 27.5 metric ton = 30.3 tons (Allowable Stress(AS) [2])

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: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Better than present minimum criteria [7] and "Bridge with ""unknown"" foundation that has not been evaluated for scour. [U]"
Inspections
Date: July 1999 [799] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 140 (2008) and Trucks: 10%
Future ADT: 440 (In 2037 )

GEYSERS RD over HILLSIDE (Route: 0)
Num: 20C0534x
Open: no restriction [A]
Built: 1999, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Corrugated Steel [6] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 25 m = 82.0 ft
Main Spans: 4 at 6.1 m = 20.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.4 m = 21.0 ft (2 Lanes) and Out-To-Out: 1.8 m = 5.9 ft for a 6.4 m = 21.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Sonoma County [097], California [06]
Owned by County Highway Agency [02], DOT District: 4
0.1 MI E/O BIG SULPHUR CR

Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 67.7 metric ton = 74.5 tons (Load Factor(LF) [1])
Inventory: 40.5 metric ton = 44.6 tons (Load Factor(LF) [1])

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: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: July 1999 [799] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 10 km = 6.2 mi
Traffic
ADT: 150 (2008) and Trucks: 5%
Future ADT: 430 (In 2037 )