US Bridges

Ri 146 Ed Dowl HWY over Cobble Hill RD

Poor

Providence County, Rhode Island · 2.0 MI S of JCT Ri 123 · Structure no. 000000000004180

Built
1956
69 years old
Condition
Poor
inspected June 2023
Type
Frame
Concrete
Length
67 ft
1 main span
Daily traffic
47,393
2015 count
Owner
State
State Highway Agency

About this bridge

Ri 146 Ed Dowl HWY over Cobble Hill RD is a concrete frame carrying Ri 146 Ed Dowl HWY over Cobble Hill RD in Providence County, Rhode Island. It was built in 1956, so it is 69 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 47,393 vehicles a day, roughly 3% of them trucks, projected to reach 56,872 by 2036. The structure is 67 ft (20.4 m) long and 101 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRi 146 Ed Dowl HWY
CrossesCobble Hill RD
Location2.0 MI S of JCT Ri 123
RouteState Highway 146
CountyProvidence County
StateRhode Island
Coordinates41.88416, -71.43699
Functional classUrban Principal Arterial - Other Freeway or Expressway

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span59 ft (18 m)
Deck width101 ft (30.8 m)
Roadway width97 ft (29.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,393 (2015)
Projected traffic56,872 by 2036
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ri 146 Ed Dowl HWY over Cobble Hill RD built?

It was built in 1956, making it 69 years old in 2025.

What condition is Ri 146 Ed Dowl HWY over Cobble Hill RD 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 June 2023.

How much traffic does Ri 146 Ed Dowl HWY over Cobble Hill RD carry?

About 47,393 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Ri 146 Ed Dowl HWY over Cobble Hill RD?

The structure is 67 ft (20.4 m) long with a longest span of 59 ft (18 m) and a deck 101 ft wide.

Who owns Ri 146 Ed Dowl HWY over Cobble Hill RD?

It is owned by the State Highway Agency.