Structure 9788 · Centre County, PA

SR 4004 over Wallace Run

Carries SR 4004 over Wallace Run, Gum Stump.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 6/9 · sets the rating

48 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.

Built1938rebuilt 2006
Length47.9 ft14.6 m
Daily traffic459counted 2024
Last inspectedAugust 2023every 24 months

Location

StatePennsylvania
CountyCentre
LocationGum Stump
CarriesSR 4004
CrossesWallace Run
Coordinates40.96849, -77.84350

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length47.9 ft (14.6 m)
Max Span44.9 ft (13.7 m)
Deck Width24.0 ft (7.3 m)
Deck Area106.6 sq m
Main Spans1
Year Built1938 (reconstructed 2006)

Traffic

Avg Daily Traffic459 (2024)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000000000009788

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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