Structure 5401700007100 · Carroll County, NH

Nh 16 over Saco River

Carries Nh 16 over Saco River, 1.6mi Albany Tl.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT408 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

408 ft end to end, longest span 158 ft: about 6 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 girder bridge.

Built1945rebuilt 1978
Length408.1 ft124.4 m
Daily traffic12,188counted 2023
Last inspectedJune 2024every 24 months

Location

StateNew Hampshire
CountyCarroll
Location1.6mi Albany Tl
CarriesNh 16
CrossesSaco River
Coordinates43.98129, -71.11508

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length408.1 ft (124.4 m)
Max Span158.1 ft (48.2 m)
Deck Width36.1 ft (11 m)
Deck Area1368.4 sq m
Main Spans3
Year Built1945 (reconstructed 1978)

Traffic

Avg Daily Traffic12,188 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number005401700007100

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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