Structure W060404ADDOTNBI · Plymouth County, MA

HWY Tihonet RD over ST 25

Carries HWY Tihonet RD over ST 25, 0.7 M E Of RTE 195.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT238 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

238 ft end to end, longest span 88 ft: about 3 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.

Built1967rebuilt 2006
Length237.9 ft72.5 m
Daily traffic1,071counted 2023
Last inspectedMarch 2023every 12 months

Location

StateMassachusetts
CountyPlymouth
Location0.7 M E Of RTE 195
CarriesHWY Tihonet RD
CrossesST 25
Coordinates41.78001, -70.71972

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length237.9 ft (72.5 m)
Max Span87.9 ft (26.8 m)
Deck Width37.4 ft (11.4 m)
Deck Area826.5 sq m
Main Spans3
Year Built1967 (reconstructed 2006)

Traffic

Avg Daily Traffic1,071 (2023)
Truck Traffic53%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberW060404ADDOTNBI

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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