Structure 21702310012500 · Rockingham County, NH

I-95 over Market Street

Carries I-95 over Market Street, 1.5 Mi From Maine Sl.

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
CAR · 15 FT107 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

107 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 multi-beam bridge.

Built197056 years old
Length107.0 ft32.6 m
Daily traffic70,573counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Hampshire
CountyRockingham
Location1.5 Mi From Maine Sl
CarriesI-95
CrossesMarket Street
Coordinates43.08429, -70.77351

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length107.0 ft (32.6 m)
Max Span103.0 ft (31.4 m)
Deck Width124.3 ft (37.9 m)
Deck Area1235.5 sq m
Main Spans1
Year Built1970

Traffic

Avg Daily Traffic70,573 (2023)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number021702310012500

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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