Structure 1901810013400 · Hillsborough County, NH

I-293 SB Off Ramp over US 3

Carries I-293 SB Off Ramp over US 3, Nh101/us3/i-293 Intchg.

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 FT165 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

165 ft end to end: 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.

Built200620 years old
Length165.0 ft50.3 m
Daily traffic8,021counted 2023
Last inspectedApril 2023every 24 months

Location

StateNew Hampshire
CountyHillsborough
LocationNh101/us3/i-293 Intchg
CarriesI-293 SB Off Ramp
CrossesUS 3
Coordinates42.95141, -71.47751

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length165.0 ft (50.3 m)
Max Span157.2 ft (47.9 m)
Deck Width35.1 ft (10.7 m)
Deck Area538.2 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic8,021 (2023)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number001901810013400

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