US Bridges

Ri 99 NB & SB over Blackstone River P&w RR

Fair

Providence County, Rhode Island · 0.5 MI SW of Ri 122 · Structure no. 000000000009850

Built
1993
32 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,005 ft
4 main spans
Daily traffic
35,200
2021 count
Owner
State
State Highway Agency

About this bridge

Ri 99 NB & SB over Blackstone River P&w RR is a steel continuous stringer/multi-beam or girder carrying Ri 99 NB & SB over Blackstone River P&w RR in Providence County, Rhode Island. It was built in 1993, so it is 32 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.

It carries about 35,200 vehicles a day, roughly 12% of them trucks, projected to reach 38,720 by 2041. The structure is 1,005 ft (306.2 m) long and 86 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRi 99 NB & SB
CrossesBlackstone River P&w RR
Location0.5 MI SW of Ri 122
RouteState Highway 99
CountyProvidence County
StateRhode Island
Coordinates41.97824, -71.48508
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length1,005 ft (306.2 m)
Longest span280 ft (85.3 m)
Deck width86 ft (26.1 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,200 (2021)
Projected traffic38,720 by 2041
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$12 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ri 99 NB & SB over Blackstone River P&w RR built?

It was built in 1993, making it 32 years old in 2025.

What condition is Ri 99 NB & SB over Blackstone River P&w RR 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 April 2023.

How much traffic does Ri 99 NB & SB over Blackstone River P&w RR carry?

About 35,200 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is Ri 99 NB & SB over Blackstone River P&w RR?

The structure is 1,005 ft (306.2 m) long with a longest span of 280 ft (85.3 m) and a deck 86 ft wide.

Who owns Ri 99 NB & SB over Blackstone River P&w RR?

It is owned by the State Highway Agency.