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Nearby Bridges in NBI 2021: 2


MN 250 over S BR ROOT RIVER (Route: 250)
Num:23027x
Open: no restriction [A]
Built: 2016, 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): Prestressed concrete [5] Stringer/Multi-beam or girder [02]
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: 36.6 m = 120.1 ft
Main Spans: 1 at 35.1 m = 115.2 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 11.3 m = 37.1 ft for a 10.4 m = 34.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Lanesboro [35450]: Fillmore County [045], Minnesota [27]
Owned by State Highway Agency [01], DOT District: 6
1.0 MI N OF JCT TH 16
Condition
Deck: Very Good [8]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: HL93 [A]
Operating: 56.7 metric ton = 62.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 43.7 metric ton = 48.1 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Meets minimum tolerable limits to be left in place as is [4]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 3.9 km = 2.4 mi
Traffic
ADT: 590 (2019) and Trucks: 9%
Future ADT: 650 (In 2039 )
CSAH 8 over S BR ROOT RIVER (Route: 8)
Num:23506x
Open: no restriction [A]
Built: 1964, 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): Steel continuous [4] Stringer/Multi-beam or girder [02]
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: 64 m = 210.0 ft
Main Spans: 3 at 23.8 m = 78.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 11.5 m = 37.7 ft for a 9.1 m = 29.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Lanesboro [35450]: Fillmore County [045], Minnesota [27]
Owned by County Highway Agency [02], DOT District: 6
0.1 MI W OF JCT TH 250
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: M 18 / H 20 [4]
Operating: 46.3 metric ton = 50.9 tons (Load Factor(LF) [1])
Inventory: 27.8 metric ton = 30.6 tons (Load Factor(LF) [1])
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: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: April 2020 [0420] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 3.4 km = 2.1 mi
Traffic
ADT: 1200 (2017) and Trucks: 0%
Future ADT: 1200 (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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