Structure 1361 356 · New Castle County, DE

Sunset Lake RD over Muddy Run

Carries Sunset Lake RD over Muddy Run, South Of Newark.

Overall conditionFair

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

How ratings work
Deck7/9 · 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 FT43 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

43 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.

Built1958rebuilt 2007
Length43.0 ft13.1 m
Daily traffic16,655counted 2022
Last inspectedApril 2023every 24 months

Location

StateDelaware
CountyNew Castle
LocationSouth Of Newark
CarriesSunset Lake RD
CrossesMuddy Run
Coordinates39.62610, -75.72426

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length43.0 ft (13.1 m)
Max Span39.7 ft (12.1 m)
Deck Width51.5 ft (15.7 m)
Deck Area205.7 sq m
Main Spans1
Year Built1958 (reconstructed 2007)

Traffic

Avg Daily Traffic16,655 (2022)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1361 356

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.

Nearby Bridges