Structure 28001390010200 · Rockingham County, NH

I-93 NB over Nh111

Carries I-93 NB over Nh111, 0.2 East Of Wyman Road.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT387 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

387 ft end to end, longest span 230 ft: about 5 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.

Built201115 years old
Length387.1 ft118 m
Daily traffic41,528counted 2023
Last inspectedMay 2023every 24 months

Location

StateNew Hampshire
CountyRockingham
Location0.2 East Of Wyman Road
CarriesI-93 NB
CrossesNh111
Coordinates42.80907, -71.27185

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length387.1 ft (118 m)
Max Span230.0 ft (70.1 m)
Deck Width75.1 ft (22.9 m)
Deck Area2702.2 sq m
Main Spans2
Year Built2011

Traffic

Avg Daily Traffic41,528 (2023)
Truck Traffic25%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number028001390010200

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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