Structure 17701490005600 · Hillsborough County, NH

Fee Tpk NB Offramp over Fee Tpk SB Off Ramp

Carries Fee Tpk NB Offramp over Fee Tpk SB Off Ramp, 1/8 Mi West Of D W Hyw..

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT121 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

121 ft end to end. 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.

Built200026 years old
Length121.1 ft36.9 m
Daily traffic9,465counted 2023
Last inspectedApril 2024every 24 months

Location

StateNew Hampshire
CountyHillsborough
Location1/8 Mi West Of D W Hyw.
CarriesFee Tpk NB Offramp
CrossesFee Tpk SB Off Ramp
Coordinates42.72161, -71.44639

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length121.1 ft (36.9 m)
Max Span110.9 ft (33.8 m)
Deck Width30.8 ft (9.4 m)
Deck Area346.9 sq m
Main Spans1
Year Built2000

Traffic

Avg Daily Traffic9,465 (2023)
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge2

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 Number017701490005600

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.

Nearby Bridges