US Bridges

North Switch RD over Wood River

Poor

Washington County, Rhode Island · 0.5 MI S of JCT Ri 3 · Structure no. 000000000002990

Built
1930
95 years old, rebuilt 1993
Condition
Poor
inspected March 2024
Type
Slab
Wood or Timber
Length
59 ft
3 main spans
Daily traffic
233
2021 count
Owner
State
State Highway Agency

About this bridge

North Switch RD over Wood River is a wood or timber slab carrying North Switch RD over Wood River in Washington County, Rhode Island. It was built in 1930 and reconstructed in 1993, so it is 95 years old, older 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 233 vehicles a day, roughly 11% of them trucks, projected to reach 256 by 2041. The structure is 59 ft (17.9 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNorth Switch RD
CrossesWood River
Location0.5 MI S of JCT Ri 3
RouteCity Street 0
Coordinates41.5028, -71.71623
Functional classRural Local

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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length59 ft (17.9 m)
Longest span22 ft (6.6 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic233 (2021)
Projected traffic256 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$2.1 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was North Switch RD over Wood River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1993.

What condition is North Switch RD over Wood River 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 March 2024.

How much traffic does North Switch RD over Wood River carry?

About 233 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is North Switch RD over Wood River?

The structure is 59 ft (17.9 m) long with a longest span of 22 ft (6.6 m) and a deck 24 ft wide.

Who owns North Switch RD over Wood River?

It is owned by the State Highway Agency.