US Bridges

Main ST over Blackstone River

Fair

Providence County, Rhode Island · 0.2 Mi. W of Jct. I-95 · Structure no. 000000000009662

Built
1968
57 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
1 main span
Daily traffic
10,100
2006 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Blackstone River is a steel stringer/multi-beam or girder carrying Main ST over Blackstone River in Providence County, Rhode Island. It was built in 1968, so it is 57 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 10,100 vehicles a day, roughly 10% of them trucks, projected to reach 12,120 by 2036. The structure is 124 ft (37.8 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesMain ST
CrossesBlackstone River
Location0.2 Mi. W of Jct. I-95
RouteU.S. Route 1
CountyProvidence County
StateRhode Island
Coordinates41.87642, -71.38336
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment7: Better than present minimum criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span118 ft (36 m)
Deck width59 ft (18 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2006)
Projected traffic12,120 by 2036
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$14.9 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Blackstone River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Main ST over Blackstone 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 August 2024.

How much traffic does Main ST over Blackstone River carry?

About 10,100 vehicles per day (2006 count), of which roughly 10% are trucks.

How long is Main ST over Blackstone River?

The structure is 124 ft (37.8 m) long with a longest span of 118 ft (36 m) and a deck 59 ft wide.

Who owns Main ST over Blackstone River?

It is owned by the City or Municipal Highway Agency.