HistoricBridges.org Bridge Locator

Nearby Bridges in NBI 2021: 7

MT HWY 91 over RR (Route: 222)
Num:S00222002+08611x
Open: no restriction [A]
Built: 1936, 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 [1] Tee beam [04]
Approach Span(s): Other [00]
Deck: Other [9] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 43.6 m = 143.1 ft
Main Spans: 3 at 15.7 m = 51.5 ft
Approach Spans: 0
Skew: 28
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 8.3 m = 27.2 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
3M SW DILLON

Condition
Deck: Satisfactory [6]
Superstructure: Poor [4]
Substructure: Serious [3]
Loading
Design: M 13.5 / H 15 [2]
Operating: 57.1 metric ton = 62.8 tons (Allowable Stress(AS) [2])
Inventory: 23.5 metric ton = 25.9 tons (Allowable Stress(AS) [2])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: February 2021 [0221] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 1.1 km = 0.7 mi
Traffic
ADT: 592 (2019) and Trucks: 1%
Future ADT: 633 (In 2039 )

MT HWY 91 over POINDEXTER SLOUGH (Route: 222)
Num:S00222002+07511x
Open: no restriction [A]
Built: 1936, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Tee beam [04]
Approach Span(s): Other [00]
Deck: Other [9] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 23.5 m = 77.1 ft
Main Spans: 3 at 7.9 m = 25.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 8.3 m = 27.2 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
3M SW DILLON

Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 36.2 metric ton = 39.8 tons (Allowable Stress(AS) [2])
Inventory: 19.9 metric ton = 21.9 tons (Allowable Stress(AS) [2])

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 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: February 2021 [0221] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 1.1 km = 0.7 mi
Traffic
ADT: 592 (2019) and Trucks: 1%
Future ADT: 633 (In 2039 )

I 15 over POINDEXTER SLOUGH (Route: 15)
Num:I00015060+08831x
Open: no restriction [A]
Built: 1983, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 22.3 m = 73.2 ft
Main Spans: 1 at 21.3 m = 69.9 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 12.6 m = 41.3 ft (2 Lanes) and Out-To-Out: 13.5 m = 44.3 ft for a 12.6 m = 41.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Dillon [20800]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
2.5M S DILLON

Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 78.8 metric ton = 86.7 tons (Load Factor(LF) [1])
Inventory: 47.2 metric ton = 51.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: January 2020 [0120] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 2468 (2019) and Trucks: 20%
Future ADT: 5183 (In 2039 )

I 15 over POINDEXTER SLOUGH (Route: 15)
Num:I00015060+08832x
Open: no restriction [A]
Built: 1983, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Location
Unknown [00000]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
2.5M S DILLON

Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 78.8 metric ton = 86.7 tons (Load Factor(LF) [1])
Inventory: 47.2 metric ton = 51.9 tons (Load Factor(LF) [1])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: February 2020 [0220] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 2468 (2019) and Trucks: 20%
Future ADT: 5183 (In 2039 )

I 15 over SEP LOCAL ROAD (Route: 15)
Num:I00015060+09941x
Open: no restriction [A]
Built: 1983, 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): Concrete continuous [2] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 18.3 m = 60.0 ft
Main Spans: 3 at 7 m = 23.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.6 m = 41.3 ft (2 Lanes) and Out-To-Out: 13.5 m = 44.3 ft for a 11.6 m = 38.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
2.5M S DILLON

Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 55.4 metric ton = 60.9 tons (Load Factor(LF) [1])
Inventory: 33.2 metric ton = 36.5 tons (Load Factor(LF) [1])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: January 2021 [0121] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 2468 (2019) and Trucks: 20%
Future ADT: 5183 (In 2039 )

I 15 over SEP LOCAL ROAD (Route: 15)
Num:I00015060+09942x
Open: no restriction [A]
Built: 1983, 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): Concrete continuous [2] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 19.2 m = 63.0 ft
Main Spans: 3 at 7 m = 23.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 13.5 m = 44.3 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]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
2.5M S DILLON

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: January 2021 [0121] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 2468 (2019) and Trucks: 20%
Future ADT: 5183 (In 2039 )

I 15 over BEAVERHEAD RIVER (Route: 15)
Num:I00015060+01771x
Open: no restriction [A]
Built: 1982, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.8 Kilometers)

Bridge Type
Main Span(s): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:

Bridge Dimensions
Length: 43.1 m = 141.4 ft
Main Spans: 2 at 30.7 m = 100.7 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 12.6 m = 41.3 ft (2 Lanes) and Out-To-Out: 13.5 m = 44.3 ft for a 12.6 m = 41.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Beaverhead County [001], Montana [30]
Owned by State Highway Agency [01], DOT District: 2
3.1M S DILLON

Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 56.2 metric ton = 61.8 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 43.5 metric ton = 47.9 tons (Load and Resistance Factor(LRFR) [3])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: February 2020 [0220] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 2468 (2019) and Trucks: 20%
Future ADT: 5183 (In 2039 )

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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