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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 9.8 m = 32.2 ft
Main Spans: 1 at 9.1 m = 29.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 5.8 m = 19.0 ft (2 Lanes) and Out-To-Out: 7.6 m = 24.9 ft for a 5.5 m = 18.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Irwin [37208]: Westmoreland County [129], Pennsylvania [42]
Owned by City or Municipal Highway Agency [04], DOT District: 12
FIRST STREET BRIDGE
Condition
Deck: Poor [4]
Superstructure: Fair [5]
Substructure: Imminent Failure [1]
Loading
Design:
Operating: 0 metric ton = 0.0 tons ()
Inventory: 0 metric ton = 0.0 tons ()
Appraisal
Structural:
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; field review indicates that failure of piers/abutments is imminent. [1]
Inspections
Date: November 2020 [1120] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 0 (2004) and Trucks: 0%
Future ADT: 500 (In 2024
)