Structure 7690 · Providence County, RI

Martin ST over Blackstone River

Carries Martin ST over Blackstone River, 0.3 Mi W Of Jct Ri 122.

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT156 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

156 ft end to end, longest span 77 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.

Built1810rebuilt 2007
Length155.5 ft47.4 m
Daily traffic2,958counted 2021
Last inspectedAugust 2023every 24 months

Location

StateRhode Island
CountyProvidence
Location0.3 Mi W Of Jct Ri 122
CarriesMartin ST
CrossesBlackstone River
Coordinates41.92700, -71.43090

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length155.5 ft (47.4 m)
Max Span77.1 ft (23.5 m)
Deck Width41.3 ft (12.6 m)
Deck Area597.2 sq m
Main Spans2
Year Built1810 (reconstructed 2007)

Traffic

Avg Daily Traffic2,958 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000007690

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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