Structure 1470N084 · New Castle County, DE

Us301 NB over Sr71/summit Bridge RD

Carries Us301 NB over Sr71/summit Bridge RD, North Of Middletown.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT212 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

212 ft end to end, longest span 106 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built20188 years old
Length211.9 ft64.6 m
Daily traffic7,301counted 2021
Last inspectedNovember 2022every 48 months

Location

StateDelaware
CountyNew Castle
LocationNorth Of Middletown
CarriesUs301 NB
CrossesSr71/summit Bridge RD
Coordinates39.48858, -75.71739

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length211.9 ft (64.6 m)
Max Span106.0 ft (32.3 m)
Deck Width52.8 ft (16.1 m)
Deck Area1040.1 sq m
Main Spans2
Year Built2018

Traffic

Avg Daily Traffic7,301 (2021)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1470N084

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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