Structure 21702580012800 · Rockingham County, NH

I-95 over Piscataqua River

Carries I-95 over Piscataqua River, I-95 At Maine State Line.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,344 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,344 ft end to end, longest span 756 ft: about 3.7 football fields. 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 through truss.

Built197155 years old
Length1344.2 ft409.7 m
Daily traffic74,766counted 2023
Last inspectedDecember 2024every 24 months

Location

StateNew Hampshire
CountyRockingham
LocationI-95 At Maine State Line
CarriesI-95
CrossesPiscataqua River
Coordinates43.09254, -70.76698

Physical Characteristics

MaterialSteel Continuous
DesignTruss - Thru
Total Length1344.2 ft (409.7 m)
Max Span755.9 ft (230.4 m)
Deck Width104.7 ft (31.9 m)
Deck Area13069.4 sq m
Main Spans3
Year Built1971

Traffic

Avg Daily Traffic74,766 (2023)
Truck Traffic6%
Lanes On Bridge6

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number021702580012800

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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