Structure 27366 · Montgomery County, PA

Pa 309 Bypass over Haws Lane

Carries Pa 309 Bypass over Haws Lane, Flourtown 31a10/3369j3.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT148 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

148 ft end to end, longest span 71 ft: about 2 semi-trucks nose to tail. 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.

Built1960rebuilt 2006
Length148.0 ft45.1 m
Daily traffic61,488counted 2023
Last inspectedAugust 2024every 24 months

Location

StatePennsylvania
CountyMontgomery
LocationFlourtown 31a10/3369j3
CarriesPa 309 Bypass
CrossesHaws Lane
Coordinates40.10643, -75.19780

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length148.0 ft (45.1 m)
Max Span70.9 ft (21.6 m)
Deck Width71.5 ft (21.8 m)
Deck Area983.2 sq m
Main Spans3
Year Built1960 (reconstructed 2006)

Traffic

Avg Daily Traffic61,488 (2023)
Truck Traffic3%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000027366

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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