Structure 2430A430 · Kent County, DE

Jackson Ditch RD over Browns Branch

Carries Jackson Ditch RD over Browns Branch, East Of Harrington.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 38 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built197452 years old
Length38.1 ft11.6 m
Daily traffic1,469counted 2020
Last inspectedAugust 2021every 48 months

Location

StateDelaware
CountyKent
LocationEast Of Harrington
CarriesJackson Ditch RD
CrossesBrowns Branch
Coordinates38.93163, -75.55109

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length38.1 ft (11.6 m)
Max Span12.1 ft (3.7 m)
Deck Width40.0 ft (12.2 m)
Deck Area141.5 sq m
Main Spans3
Year Built1974

Traffic

Avg Daily Traffic1,469 (2020)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number2430A430

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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