Structure 44065 · Montgomery County, PA

Madison Avenue over Pa 309 Expressway

Carries Madison Avenue over Pa 309 Expressway, Fort Wash. 30k4/3257h8.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT128 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

128 ft end to end. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built200620 years old
Length128.0 ft39 m
Daily traffic383counted 2024
Last inspectedJuly 2022every 48 months

Location

StatePennsylvania
CountyMontgomery
LocationFort Wash. 30k4/3257h8
CarriesMadison Avenue
CrossesPa 309 Expressway
Coordinates40.14225, -75.20299

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length128.0 ft (39 m)
Max Span122.0 ft (37.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area510.9 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic383 (2024)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000044065

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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