Structure 28298 · Montgomery County, PA

Ramp B over Private Road

Carries Ramp B over Private Road, Ramp SB 100 3138e01.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT593 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9Substructure 4/9 · sets the rating

593 ft end to end, longest span 88 ft: about 1.6 football fields. 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.

Built195472 years old
Length592.8 ft180.7 m
Daily traffic1,672counted 2024
Last inspectedApril 2023every 24 months

Location

StatePennsylvania
CountyMontgomery
LocationRamp SB 100 3138e01
CarriesRamp B
CrossesPrivate Road
Coordinates40.24760, -75.66134

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length592.8 ft (180.7 m)
Max Span87.9 ft (26.8 m)
Deck Width25.9 ft (7.9 m)
Deck Area1427.5 sq m
Main Spans8
Year Built1954

Traffic

Avg Daily Traffic1,672 (2024)
Truck Traffic7%
Lanes On Bridge1

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000028298

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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