Structure 1242 352 · New Castle County, DE

Red Mill RD over Stream Mill Pond

Carries Red Mill RD over Stream Mill Pond, East Of Newark.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 36 ft across with 2 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.

Built1971rebuilt 2022
Length36.4 ft11.1 m
Daily traffic18,195counted 2020
Last inspectedMarch 2022every 48 months

Location

StateDelaware
CountyNew Castle
LocationEast Of Newark
CarriesRed Mill RD
CrossesStream Mill Pond
Coordinates39.69152, -75.70814

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length36.4 ft (11.1 m)
Max Span16.1 ft (4.9 m)
Deck Area147.6 sq m
Main Spans2
Year Built1971 (reconstructed 2022)

Traffic

Avg Daily Traffic18,195 (2020)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1242 352

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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