Bridge Type
Main Span(s): Concrete [1] Arch - Deck [11]
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: 168.9 m = 554.2 ft
Main Spans: 5 at 33.5 m = 109.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.9 m = 29.2 ft (2 Lanes) and Out-To-Out: 9.8 m = 32.2 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Phoenixville [60120]: Chester County [029], Pennsylvania [42]
Owned by State Highway Agency [01], DOT District: 6
BLACK ROCK BRIDGE 8E13
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 59 metric ton = 64.9 tons ()
Inventory: 35.4 metric ton = 38.9 tons ()
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Superior to present desirable criteria [9] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: June 1999 [699] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.4 km = 0.9 mi
Traffic
ADT: 7650 (2021) and Trucks: 3%
Future ADT: 11647 (In 2032
)
