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Nearby Bridges in NBI 2021: 1


OR 229 (HWY 181) over Siletz River (Route: 229)
Num:00851A181 02310x
Open: no restriction [A]
Built: 1956, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Epoxy Overlay [5]
Bridge Dimensions
Length: 107.4 m = 352.4 ft
Main Spans: 1 at 58 m = 190.3 ft
Approach Spans: 4
Skew: 0
Width, Roadway: 7.9 m = 25.9 ft (2 Lanes) and Out-To-Out: 10.7 m = 35.1 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 4.65 m = 15.3 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Lincoln County [041], Oregon [41]
Owned by State Highway Agency [01], DOT District: 4
004 MI N SILETZ
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 18.5 metric ton = 20.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 14.3 metric ton = 15.7 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: June 1999 [699] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 5.3 km = 3.3 mi
Traffic
ADT: 1100 (2018) and Trucks: 25%
Future ADT: 1200 (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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