Structure 3146A004 · Sussex County, DE

Sussex Hgwy / Us13 over Gravelly Run

Carries Sussex Hgwy / Us13 over Gravelly Run, East Of Bridgeville.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT25 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

25 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 slab bridge.

Built195175 years old
Length25.3 ft7.7 m
Daily traffic23,386counted 2021
Last inspectedSeptember 2022every 48 months

Location

StateDelaware
CountySussex
LocationEast Of Bridgeville
CarriesSussex Hgwy / Us13
CrossesGravelly Run
Coordinates38.74476, -75.59264

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length25.3 ft (7.7 m)
Max Span21.3 ft (6.5 m)
Deck Width126.6 ft (38.6 m)
Deck Area297.2 sq m
Main Spans1
Year Built1951

Traffic

Avg Daily Traffic23,386 (2021)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number3146A004

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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