Structure 22201760013300 · Strafford County, NH

Tebbetts Road over Nh 16 Sp Tpk

Carries Tebbetts Road over Nh 16 Sp Tpk, 1.7 Mi From Dover Tl.

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
SEMI-TRUCK · 72 FT168 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

168 ft end to end, longest span 47 ft: about 2 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.

Built1957rebuilt 1992
Length168.0 ft51.2 m
Daily traffic4,661counted 2023
Last inspectedJuly 2023every 24 months

Location

StateNew Hampshire
CountyStrafford
Location1.7 Mi From Dover Tl
CarriesTebbetts Road
CrossesNh 16 Sp Tpk
Coordinates43.26860, -70.95716

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length168.0 ft (51.2 m)
Max Span46.9 ft (14.3 m)
Deck Width30.5 ft (9.3 m)
Deck Area476.2 sq m
Main Spans4
Year Built1957 (reconstructed 1992)

Traffic

Avg Daily Traffic4,661 (2023)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number022201760013300

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