Structure 28031 · Montgomery County, PA

Ridge Pike over Norfolk Southern

Carries Ridge Pike over Norfolk Southern, 300 SE I-276 Adc 3367-k4.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructure4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT93 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 4/9

93 ft end to end. Lengths and the car 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 girder bridge.

Built193789 years old
Length92.8 ft28.3 m
Daily traffic36,517counted 2008
Last inspectedOctober 2022every 24 months

Location

StatePennsylvania
CountyMontgomery
Location300 SE I-276 Adc 3367-k4
CarriesRidge Pike
CrossesNorfolk Southern
Coordinates40.10530, -75.31410

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length92.8 ft (28.3 m)
Max Span86.9 ft (26.5 m)
Deck Width63.3 ft (19.3 m)
Deck Area546.2 sq m
Main Spans1
Year Built1937

Traffic

Avg Daily Traffic36,517 (2008)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 24 months
OwnerRailroad
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000028031

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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