Structure 8701440006700 · Grafton County, NH

I-93 Parkway over Tram Access Road

Carries I-93 Parkway over Tram Access Road, 2.2 Mi. N. Lincoln T.l..

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT101 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

101 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built198640 years old
Length101.0 ft30.8 m
Daily traffic11,599counted 2023
Last inspectedMay 2023every 24 months

Location

StateNew Hampshire
CountyGrafton
Location2.2 Mi. N. Lincoln T.l.
CarriesI-93 Parkway
CrossesTram Access Road
Coordinates44.17002, -71.68365

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length101.0 ft (30.8 m)
Max Span96.1 ft (29.3 m)
Deck Width48.9 ft (14.9 m)
Deck Area458.9 sq m
Main Spans1
Year Built1986

Traffic

Avg Daily Traffic11,599 (2023)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge2

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 Number008701440006700

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