Structure 17701020009000 · Hillsborough County, NH

Nh111 over US 3 Fee Tpk

Carries Nh111 over US 3 Fee Tpk, 0.02 Mi From Nh111-a.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT283 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

283 ft end to end, longest span 142 ft: about 4 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.

Built199828 years old
Length283.1 ft86.3 m
Daily traffic34,337counted 2023
Last inspectedApril 2024every 24 months

Location

StateNew Hampshire
CountyHillsborough
Location0.02 Mi From Nh111-a
CarriesNh111
CrossesUS 3 Fee Tpk
Coordinates42.74681, -71.49251

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length283.1 ft (86.3 m)
Max Span142.1 ft (43.3 m)
Deck Width111.9 ft (34.1 m)
Deck Area2942.8 sq m
Main Spans2
Year Built1998

Traffic

Avg Daily Traffic34,337 (2023)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge10

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number017701020009000

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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