Structure 17436 · Franklin County, PA

Pa 641; Timmons RD over Dry Run

Carries Pa 641; Timmons RD over Dry Run, 1 Ml.s.e. Of Spring Run.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT43 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

43 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 multi-beam bridge.

Built1933rebuilt 1948
Length43.0 ft13.1 m
Daily traffic2,708counted 2024
Last inspectedMarch 2024every 24 months

Location

StatePennsylvania
CountyFranklin
Location1 Ml.s.e. Of Spring Run
CarriesPa 641; Timmons RD
CrossesDry Run
Coordinates40.13757, -77.76814

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length43.0 ft (13.1 m)
Max Span40.0 ft (12.2 m)
Deck Width24.9 ft (7.6 m)
Deck Area99.6 sq m
Main Spans1
Year Built1933 (reconstructed 1948)

Traffic

Avg Daily Traffic2,708 (2024)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000000000017436

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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