Structure 27568 · Montgomery County, PA

Lumber Street over Macoby Creek

Carries Lumber Street over Macoby Creek, Green Lane 2917e6.

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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT90 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 4/9

90 ft end to end, longest span 43 ft. 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 multi-beam bridge.

Built1931rebuilt 1969
Length89.9 ft27.4 m
Daily traffic731counted 2024
Last inspectedJuly 2023every 24 months

Location

StatePennsylvania
CountyMontgomery
LocationGreen Lane 2917e6
CarriesLumber Street
CrossesMacoby Creek
Coordinates40.34219, -75.47075

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length89.9 ft (27.4 m)
Max Span43.0 ft (13.1 m)
Deck Width32.5 ft (9.9 m)
Deck Area271.3 sq m
Main Spans2
Year Built1931 (reconstructed 1969)

Traffic

Avg Daily Traffic731 (2024)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000027568

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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