Structure 26620 · Mifflin County, PA

T-383 Snook Road over Belltown Run

Carries T-383 Snook Road over Belltown Run, 350 Ft East Of T707.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

56 ft end to end, longest span 27 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 tee-beam bridge.

Built194185 years old
Length56.1 ft17.1 m
Daily traffic161counted 2023
Last inspectedMarch 2023every 24 months

Location

StatePennsylvania
CountyMifflin
Location350 Ft East Of T707
CarriesT-383 Snook Road
CrossesBelltown Run
Coordinates40.68723, -77.41881

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length56.1 ft (17.1 m)
Max Span26.9 ft (8.2 m)
Deck Width22.6 ft (6.9 m)
Deck Area118.0 sq m
Main Spans2
Year Built1941

Traffic

Avg Daily Traffic161 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000026620

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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