Structure 12722 · Columbia County, PA

SR 4018 over Spruce Run

Carries SR 4018 over Spruce Run, 2.0 Mi SW Millville Boro.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

36 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 channel-beam bridge.

Built1932rebuilt 2011
Length36.1 ft11 m
Daily traffic259counted 2023
Last inspectedFebruary 2024every 24 months

Location

StatePennsylvania
CountyColumbia
Location2.0 Mi SW Millville Boro
CarriesSR 4018
CrossesSpruce Run
Coordinates41.09571, -76.54207

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length36.1 ft (11 m)
Max Span33.1 ft (10.1 m)
Deck Width27.6 ft (8.4 m)
Deck Area92.4 sq m
Main Spans1
Year Built1932 (reconstructed 2011)

Traffic

Avg Daily Traffic259 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000012722

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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