ARNOLD DRIVE over SONOMA CREEK (Route: 0)
Num: 20C0213x
Posted for load [P]
Built: 1930, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 43.6 m = 143.1 ft
Main Spans: 1 at 42.7 m = 140.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.4 m = 24.3 ft (2 Lanes) and Out-To-Out: 7.8 m = 25.6 ft for a 10 m = 32.8 ft approaching roadway.
Vertical Clearance: 3.86 m = 12.7 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Sonoma County [097], California [06]
Owned by County Highway Agency [02], DOT District: 4
7.6 MI NORTH OF SR 116

Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: M 13.5 / H 15 [2]
Operating: 22.4 metric ton = 24.6 tons (Load Factor(LF) [1])
Inventory: 13.3 metric ton = 14.6 tons (Load Factor(LF) [1])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 2020 [1020] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 13900 (2015) and Trucks: 5%
Future ADT: 14486 (In 2038 )

ARNOLD DR over SONOMA CREEK (Route: 0)
Num: 20C0214x
Open: no restriction [A]
Built: 1924, Reconstructed: 1971
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Concrete continuous [2] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 39.6 m = 129.9 ft
Main Spans: 2 at 21.9 m = 71.9 ft
Approach Spans: 0
Skew: 17
Width, Roadway: 12.2 m = 40.0 ft (2 Lanes) and Out-To-Out: 12.8 m = 42.0 ft for a 12.2 m = 40.0 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
7.8 MI N OF SR 116

Condition
Deck: Poor [4]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design:
Operating: 58.3 metric ton = 64.1 tons (Load Factor(LF) [1])
Inventory: 35 metric ton = 38.5 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and "Bridge with ""unknown"" foundation that has not been evaluated for scour. [U]"
Inspections
Date: May 1999 [599] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.8 km = 0.5 mi
Traffic
ADT: 13900 (2010) and Trucks: 5%
Future ADT: 15252 (In 2037 )

HARNEY DRIVE over SONOMA CREEK (Route: 0)
Num: 20I0001x
Open: no restriction [A]
Built: 1935, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.4 Kilometers)

Bridge Type
Main Span(s): Concrete continuous [2] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 48.5 m = 159.1 ft
Main Spans: 3 at 15.8 m = 51.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 9.8 m = 32.2 ft for a 12 m = 39.4 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 Other State Agencies [21], DOT District: 4
SONOMA STATE INSTITUTION

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 31.8 metric ton = 35.0 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 24.3 metric ton = 26.7 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: May 1999 [599] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 250 (2011) and Trucks: 3%
Future ADT: 382 (In 2037 )