Structure 19701480013200 · Rockingham County, NH

US 1 over Csx

Carries US 1 over Csx, 1.1mi From Rye Tl.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructure5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 5/9

42 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 tee-beam bridge.

Built193591 years old
Length42.0 ft12.8 m
Daily traffic15,436counted 2023
Last inspectedNovember 2024every 8 months

Location

StateNew Hampshire
CountyRockingham
Location1.1mi From Rye Tl
CarriesUS 1
CrossesCsx
Coordinates42.98878, -70.82319

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length42.0 ft (12.8 m)
Max Span36.1 ft (11 m)
Deck Width42.3 ft (12.9 m)
Deck Area165.1 sq m
Main Spans1
Year Built1935

Traffic

Avg Daily Traffic15,436 (2023)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 8 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number019701480013200

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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