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Nearby Bridges in NBI 2021: 1


RT CC S over NIANGUA BR (Route: 0)
Num:4731x
Open: no restriction [A]
Built: 1924, 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: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 25 m = 82.0 ft
Main Spans: 1 at 24.4 m = 80.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.3 m = 20.7 ft (2 Lanes) and Out-To-Out: 6.5 m = 21.3 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Niangua [52436]: Webster County [225], Missouri [29]
Owned by State Highway Agency [01], DOT District: 6
S 25 T 31 N R 18 W
Condition
Deck: Serious [3]
Superstructure: Poor [4]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 25.2 metric ton = 27.7 tons (Load Factor(LF) [1])
Inventory: 16.2 metric ton = 17.8 tons (Load Factor(LF) [1])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Somewhat better than minimum adequacy to tolerate being left in place as is [5] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: February 2020 [0220] 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: 4.2 km = 2.6 mi
Traffic
ADT: 3428 (2019) and Trucks: 11%
Future ADT: 5484 (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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