US Bridges

Mill RD over Hemlock Brook

PoorPosted for load

Providence County, Rhode Island · 0.5 MI E of Ri 94 · Structure no. 000000000008790

Built
1950
75 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
73
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mill RD over Hemlock Brook is a steel stringer/multi-beam or girder carrying Mill RD over Hemlock Brook in Providence County, Rhode Island. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 73 vehicles a day, roughly 15% of them trucks, projected to reach 80 by 2041. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMill RD
CrossesHemlock Brook
Location0.5 MI E of Ri 94
RouteCity Street 0
Coordinates41.79195, -71.70933
Functional classRural Local

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.8 US tons
Inventory rating12.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2021)
Projected traffic80 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$2.5 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill RD over Hemlock Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mill RD over Hemlock Brook 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 April 2024.

How much traffic does Mill RD over Hemlock Brook carry?

About 73 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Mill RD over Hemlock Brook?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Mill RD over Hemlock Brook?

It is owned by the Town or Township Highway Agency.