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Nearby Bridges in NBI 2021: 1


WOODBRIDGE DRIVE over DRAINAGE 002 (Route: 25058)
Num:M25058000+00301x
Open: no restriction [A]
Built: 1975, 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): Wood or timber [7] Arch - Deck [11]
Approach Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Deck: Corrugated Steel [6] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 27.7 m = 90.9 ft
Main Spans: 1 at 18.3 m = 60.0 ft
Approach Spans: 2
Skew: 10
Width, Roadway: 8 m = 26.2 ft (2 Lanes) and Out-To-Out: 11.7 m = 38.4 ft for a 7.7 m = 25.3 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Helena [35600]: Lewis and Clark County [049], Montana [30]
Owned by County Highway Agency [02], DOT District: 3
HELENA-WOODBRIDGE DRIVE
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 23.6 metric ton = 26.0 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 18.1 metric ton = 19.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Equal to present minimum criteria [6]
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: December 2020 [1220] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.1 km = 0.1 mi
Traffic
ADT: 100 (2003) and Trucks: 0%
Future ADT: 100 (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.

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