Bridge Type
Main Span(s): Concrete [1] Arch - Thru [12]
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: 34.7 m = 113.9 ft
Main Spans: 1 at 30.5 m = 100.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.2 m = 20.3 ft (2 Lanes) and Out-To-Out: 8.1 m = 26.6 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 4.37 m = 14.3 ft and Navigational Clearance: 2.1 m = 6.9 ft
Location
Blue Hill [05700]: Hancock County [009], Maine [23]
Owned by State Highway Agency [01], DOT District: 4
.8 MI S JCT 172
Condition
Deck: Poor [4]
Superstructure: Poor [4]
Substructure: Serious [3]
Loading
Design: M 18 / H 20 [4]
Operating: 28.5 metric ton = 31.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 22 metric ton = 24.2 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: April 2020 [0420] and Frequency: 12
Future Work
Work Needed:
Bridge Detour: 1.4 km = 0.9 mi
Traffic
ADT: 1867 (2016) and Trucks: 5%
Future ADT: 2801 (In 2036
)
