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Nearby Bridges in NBI 2021: 2


US101 (Hwy 9) over Dougherty Slough (Route: 101)
Num:17371 009 06512x
Open: no restriction [A]
Built: 2000, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 40.5 m = 132.9 ft
Main Spans: 2 at 20.3 m = 66.6 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 23.8 m = 78.1 ft (4 Lanes) and Out-To-Out: 28.3 m = 92.9 ft for a 23.8 m = 78.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Tillamook [73700]: Tillamook County [057], Oregon [41]
Owned by State Highway Agency [01], DOT District: 1
004 MI N TILLAMOOK
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 42.4 metric ton = 46.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 32.7 metric ton = 36.0 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 9 km = 5.6 mi
Traffic
ADT: 17500 (2018) and Trucks: 9%
Future ADT: 17600 (In 2038 )
US101 (Hwy 9) over Hall Slough (Route: 101)
Num:17370 009 06499x
Open: no restriction [A]
Built: 2000, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 20.1 m = 65.9 ft
Main Spans: 1 at 20.1 m = 65.9 ft
Approach Spans: 0
Skew: 18
Width, Roadway: 23.8 m = 78.1 ft (4 Lanes) and Out-To-Out: 28.3 m = 92.9 ft for a 23.8 m = 78.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Tillamook [73700]: Tillamook County [057], Oregon [41]
Owned by State Highway Agency [01], DOT District: 1
005 MI N TILLAMOOK
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 42.4 metric ton = 46.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 32.7 metric ton = 36.0 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 9 km = 5.6 mi
Traffic
ADT: 17600 (2018) and Trucks: 9%
Future ADT: 18300 (In 2038 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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