US 12 over SNAKE RIVER & BNRR (Route: 12)
Num:0003762A0000000x
Open: no restriction [A]
Built: 1950, Reconstructed: 1988
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] Truss - Thru [10]
Approach Span(s): Steel [3] Truss - Deck [09]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 539.5 m = 1770.1 ft
Main Spans: 3 at 129.5 m = 424.9 ft
Approach Spans: 10
Skew: 0
Width, Roadway: 9.7 m = 31.8 ft (2 Lanes) and Out-To-Out: 10.4 m = 34.1 ft for a 12.5 m = 41.0 ft approaching roadway.
Vertical Clearance: 5 m = 16.4 ft and Navigational Clearance: 15.2 m = 49.9 ft

Location
Unknown [00000]: Franklin County [021], Washington [53]
Owned by State Highway Agency [01], DOT District: 5
2.9 E JCT I-182

Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 44.4 metric ton = 48.8 tons (Load Factor(LF) [1])
Inventory: 27.2 metric ton = 29.9 tons (Load Factor(LF) [1])

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: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: July 2020 [0720] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 12.9 km = 8.0 mi
Traffic
ADT: 12841 (2019) and Trucks: 18%
Future ADT: 16539 (In 2039 )

US 12 over SNAKE R. & BN RY (Route: 12)
Num:0012800A0000000x
Open: no restriction [A]
Built: 1986, 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] Truss - Thru [10]
Approach Span(s): Prestressed concrete continuous [6] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 542.5 m = 1779.9 ft
Main Spans: 3 at 129.5 m = 424.9 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 14.7 m = 48.2 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 5.16 m = 16.9 ft and Navigational Clearance: 19.2 m = 63.0 ft

Location
Unknown [00000]: Franklin County [021], Washington [53]
Owned by State Highway Agency [01], DOT District: 5
2.9 E JCT I-182

Condition
Deck: Satisfactory [6]
Superstructure: Poor [4]
Substructure: Satisfactory [6]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 37.2 metric ton = 40.9 tons (Load Factor(LF) [1])
Inventory: 21.8 metric ton = 24.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Equal to present minimum criteria [6]
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: July 2020 [0720] and Frequency: 24

Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 12841 (2019) and Trucks: 18%
Future ADT: 16539 (In 2039 )