US Bridges

Shannock RD over Pawcatuck River

FairPosted for load

Washington County, Rhode Island · 1.7 MI E of JCT Ri 91 · Structure no. 000000000000610

Built
1974
51 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
1,314
2021 count
Owner
State
State Highway Agency

About this bridge

Shannock RD over Pawcatuck River is a prestressed concrete stringer/multi-beam or girder carrying Shannock RD over Pawcatuck River in Washington County, Rhode Island. It was built in 1974, so it is 51 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,314 vehicles a day, roughly 4% of them trucks, projected to reach 1,445 by 2041. The structure is 74 ft (22.6 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesShannock RD
CrossesPawcatuck River
Location1.7 MI E of JCT Ri 91
CountyWashington County
StateRhode Island
Coordinates41.44762, -71.63666
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating58.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span70 ft (21.3 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,314 (2021)
Projected traffic1,445 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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$4.1 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shannock RD over Pawcatuck River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Shannock RD over Pawcatuck River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Shannock RD over Pawcatuck River carry?

About 1,314 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Shannock RD over Pawcatuck River?

The structure is 74 ft (22.6 m) long with a longest span of 70 ft (21.3 m) and a deck 38 ft wide.

Who owns Shannock RD over Pawcatuck River?

It is owned by the State Highway Agency.