OR 99W (Hwy 91) SB over North Yamhill River (Route: 99)
Num:00441 01W 03499x
Open: no restriction [A]
Built: 1921, 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 - Deck [09]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 109.7 m = 359.9 ft
Main Spans: 1 at 24.4 m = 80.1 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 6.1 m = 20.0 ft (2 Lanes) and Out-To-Out: 8.1 m = 26.6 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
McMinnville [45000]: Yamhill County [071], Oregon [41]
Owned by State Highway Agency [01], DOT District: 3
002 MI N MCMINNVILLE

Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 20.7 metric ton = 22.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 15.9 metric ton = 17.5 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])

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 desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: April 1999 [499] and Frequency: 24

Future Work
Work Needed: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 11800 (2018) and Trucks: 7%
Future ADT: 11850 (In 2038 )

OR 99W (HWY 91) NB over North Yamhill River (Route: 99)
Num:00441A01W 03504x
Open: no restriction [A]
Built: 1959, 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): Concrete continuous [2] Box beam or girders - Multiple [05]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Epoxy Overlay [5]

Bridge Dimensions
Length: 116.3 m = 381.6 ft
Main Spans: 3 at 30.5 m = 100.1 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 10.7 m = 35.1 ft for a 9.1 m = 29.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
McMinnville [45000]: Yamhill County [071], Oregon [41]
Owned by State Highway Agency [01], DOT District: 3
001 MI N MCMINNVILLE

Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 27.9 metric ton = 30.7 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 21.4 metric ton = 23.5 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])

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: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: April 1999 [499] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 10800 (2018) and Trucks: 13%
Future ADT: 12450 (In 2038 )