Structure 17301240011600 · Strafford County, NH

Nh 16 Sp Tpk over Jones Access Road

Carries Nh 16 Sp Tpk over Jones Access Road, 6.6 Mi N Of Rochester Tl.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 33 ft across. 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, so those are drawn as typical for a culvert.

Built198046 years old
Length33.1 ft10.1 m
Daily traffic14,518counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Hampshire
CountyStrafford
Location6.6 Mi N Of Rochester Tl
CarriesNh 16 Sp Tpk
CrossesJones Access Road
Coordinates43.46471, -70.99741

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length33.1 ft (10.1 m)
Max Span27.9 ft (8.5 m)
Deck Width65.0 ft (19.8 m)
Deck Area200.0 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic14,518 (2023)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number017301240011600

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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