Structure 46120 · Adams County, PA

Old Hbg RD 3001 over Trib Rock CR

Carries Old Hbg RD 3001 over Trib Rock CR, NE Of Gettysburg.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

61 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 box-beam bridge.

Built201016 years old
Length61.0 ft18.6 m
Daily traffic3,874counted 2023
Last inspectedNovember 2022every 24 months

Location

StatePennsylvania
CountyAdams
LocationNE Of Gettysburg
CarriesOld Hbg RD 3001
CrossesTrib Rock CR
Coordinates39.87252, -77.20289

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length61.0 ft (18.6 m)
Max Span60.0 ft (18.3 m)
Deck Width37.4 ft (11.4 m)
Deck Area212.0 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic3,874 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000046120

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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