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Nearby Bridges in NBI 2021: 1


STATE HIGHWAY 24 over FT. PECK SPILLWAY (Route: 24)
Num:CEPMROMT0000011x
Open: no restriction [A]
Built: 1937, 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: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 310.2 m = 1017.8 ft
Main Spans: 20 at 15.5 m = 50.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 10.3 m = 33.8 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
McCone [99055]: McCone County [055], Montana [30]
Owned by Corps of Engineers (Civil) [70], DOT District: 0
4 Miles East of Fort Peck
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 42.8 metric ton = 47.1 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 33 metric ton = 36.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 19.9 km = 12.3 mi
Traffic
ADT: 203 (2019) and Trucks: 7%
Future ADT: 300 (In 2037 )

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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