HistoricBridges.org Menu: HistoricBridges.org Menu:



BridgeSeek

Nearby Bridges in NBI 2021: 1


MILWAUKEE RD over YELLOWSTONE RIVER 030 (Route: 42)
Num:L40042002+06001x
Open: no restriction [A]
Built: 1907, 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): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Other [9]
Bridge Dimensions
Length: 328.5 m = 1077.8 ft
Main Spans: 4 at 82.1 m = 269.4 ft
Approach Spans: 0
Skew: 10
Width, Roadway: 2.8 m = 9.2 ft (1 Lanes) and Out-To-Out: 3.8 m = 12.5 ft for a 5.8 m = 19.0 ft approaching roadway.
Vertical Clearance: 7.22 m = 23.7 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Prairie County [079], Montana [30]
Owned by County Highway Agency [02], DOT District: 4
4M SW TERRY
Condition
Deck: Poor [4]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 28.1 metric ton = 30.9 tons (Allowable Stress(AS) [2])
Inventory: 20.9 metric ton = 23.0 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: July 1999 [799] 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: 19.9 km = 12.3 mi
Traffic
ADT: 100 (2007) and Trucks: 0%
Future ADT: 120 (In 2026 )

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.

Divider

Back

Top

Divider

About - Contact

Divider