US Bridges

Ri 78 West By-Pass over Old Hopkinton RD

Poor

Washington County, Rhode Island · 2.0 MI E of Conn Line · Structure no. 000000000008550

Built
1975
50 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
130 ft
1 main span
Daily traffic
16,600
2008 count
Owner
State
State Highway Agency

About this bridge

Ri 78 West By-Pass over Old Hopkinton RD is a steel stringer/multi-beam or girder carrying Ri 78 West By-Pass over Old Hopkinton RD in Washington County, Rhode Island. It was built in 1975, so it is 50 years old, younger than the Rhode Island average of 54.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 16,600 vehicles a day, roughly 10% of them trucks, projected to reach 19,920 by 2036. The structure is 130 ft (39.6 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesRi 78 West By-Pass
CrossesOld Hopkinton RD
Location2.0 MI E of Conn Line
RouteState Highway 78
CountyWashington County
StateRhode Island
Coordinates41.38901, -71.80494
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span122 ft (37.2 m)
Deck width51 ft (15.5 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,600 (2008)
Projected traffic19,920 by 2036
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ri 78 West By-Pass over Old Hopkinton RD built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ri 78 West By-Pass over Old Hopkinton RD in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Ri 78 West By-Pass over Old Hopkinton RD carry?

About 16,600 vehicles per day (2008 count), of which roughly 10% are trucks.

How long is Ri 78 West By-Pass over Old Hopkinton RD?

The structure is 130 ft (39.6 m) long with a longest span of 122 ft (37.2 m) and a deck 51 ft wide.

Who owns Ri 78 West By-Pass over Old Hopkinton RD?

It is owned by the State Highway Agency.