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: 30.8 m = 101.1 ft
Main Spans: 1 at 29.3 m = 96.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 14.6 m = 47.9 ft (3 Lanes) and Out-To-Out: 18.9 m = 62.0 ft for a 13.7 m = 44.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Scio [71940]: Washtenaw County [161], Michigan [26]
Owned by County Highway Agency [02], DOT District: 6
SCIO TWP SECTION 6
Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 99.9 metric ton = 109.9 tons (Load Factor(LF) [1])
Inventory: 67.9 metric ton = 74.7 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present desirable criteria [8]
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: May 1999 [599] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 18086 (2004) and Trucks: 7%
Future ADT: 30023 (In 2026
)
