ARLENE DRIVE over I-75 (Route: 0)
Num:2498x
Open: no restriction [A]
Built: 1957, Reconstructed: 2010
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] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Latex Concrete or similar additive [3]

Bridge Dimensions
Length: 57 m = 187.0 ft
Main Spans: 4 at 17.1 m = 56.1 ft
Approach Spans: 0
Skew: 17
Width, Roadway: 10.4 m = 34.1 ft (2 Lanes) and Out-To-Out: 11.1 m = 36.4 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
Flint [29020]: Genesee County [049], Michigan [26]
Owned by State Highway Agency [01], DOT District: 4
S OF M-21

Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 85.5 metric ton = 94.1 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 51.2 metric ton = 56.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: August 2020 [0820] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 220 (1988) and Trucks: 0%
Future ADT: 253 (In 2008 )

M-21 over I-75 (Route: 21)
Num:2499x
Open: no restriction [A]
Built: 2009, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 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: 62.6 m = 205.4 ft
Main Spans: 2 at 32.4 m = 106.3 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 23.2 m = 76.1 ft (6 Lanes) and Out-To-Out: 28.5 m = 93.5 ft for a 23.2 m = 76.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Flint [29020]: Genesee County [049], Michigan [26]
Owned by State Highway Agency [01], DOT District: 4
NEAR W LTS OF FLINT

Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Good [7]
Loading
Design: HL93 [A]
Operating: 76.1 metric ton = 83.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 34.7 metric ton = 38.2 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: February 2020 [0220] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 0 km = 0.0 mi
Traffic
ADT: 27203 (2007) and Trucks: 1%
Future ADT: 24000 (In 2028 )