US Bridges

Ri 116 G Wash HWY over Stillwater Reservoir

Fair

Providence County, Rhode Island · 0.5 MI S of JCT Ri 7 · Structure no. 000000000002780

Built
1932
93 years old, rebuilt 2012
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
449 ft
1 main span
Daily traffic
9,419
2021 count
Owner
State
State Highway Agency

About this bridge

Ri 116 G Wash HWY over Stillwater Reservoir is a concrete arch - deck carrying Ri 116 G Wash HWY over Stillwater Reservoir in Providence County, Rhode Island. It was built in 1932 and reconstructed in 2012, so it is 93 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 6 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 9,419 vehicles a day, roughly 9% of them trucks, projected to reach 10,361 by 2041. The structure is 449 ft (136.9 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRi 116 G Wash HWY
CrossesStillwater Reservoir
Location0.5 MI S of JCT Ri 7
RouteState Highway 116
CountyProvidence County
StateRhode Island
Coordinates41.90834, -71.5364
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+12 approach)
Design loadHS 25 or greater
Structure length449 ft (136.9 m)
Longest span119 ft (36.3 m)
Deck width50 ft (15.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,419 (2021)
Projected traffic10,361 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$33 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ri 116 G Wash HWY over Stillwater Reservoir built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 2012.

What condition is Ri 116 G Wash HWY over Stillwater Reservoir 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 September 2024.

How much traffic does Ri 116 G Wash HWY over Stillwater Reservoir carry?

About 9,419 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Ri 116 G Wash HWY over Stillwater Reservoir?

The structure is 449 ft (136.9 m) long with a longest span of 119 ft (36.3 m) and a deck 50 ft wide.

Who owns Ri 116 G Wash HWY over Stillwater Reservoir?

It is owned by the State Highway Agency.