US Bridges

US 1A Main ST over Saugatucket River

Fair

Washington County, Rhode Island · 0.9 MI N of Int South RD · Structure no. 000000000000200

Built
1920
105 years old, rebuilt 1998
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
10,107
2021 count
Owner
State
State Highway Agency

About this bridge

US 1A Main ST over Saugatucket River is a concrete tee beam carrying US 1A Main ST over Saugatucket River in Washington County, Rhode Island. It was built in 1920 and reconstructed in 1998, so it is 105 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 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.

It carries about 10,107 vehicles a day, roughly 5% of them trucks, projected to reach 11,118 by 2041. The structure is 44 ft (13.4 m) long and 66 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS 1A Main ST
CrossesSaugatucket River
Location0.9 MI N of Int South RD
RouteU.S. Route 1A
CountyWashington County
StateRhode Island
Coordinates41.43697, -71.50143
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span37 ft (11.3 m)
Deck width66 ft (20.1 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,107 (2021)
Projected traffic11,118 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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$4.3 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 1A Main ST over Saugatucket River built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1998.

What condition is US 1A Main ST over Saugatucket 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 July 2024.

How much traffic does US 1A Main ST over Saugatucket River carry?

About 10,107 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is US 1A Main ST over Saugatucket River?

The structure is 44 ft (13.4 m) long with a longest span of 37 ft (11.3 m) and a deck 66 ft wide.

Who owns US 1A Main ST over Saugatucket River?

It is owned by the State Highway Agency.