US Bridges

Maple Valley RD over Flat River

Poor

Kent County, Rhode Island · 0.3 MI N of JCT Ri 117 · Structure no. 000000000008430

Built
1978
47 years old
Condition
Poor
inspected March 2024
Type
Culvert
Steel
Length
36 ft
2 main spans
Daily traffic
1,386
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Maple Valley RD over Flat River is a steel culvert carrying Maple Valley RD over Flat River in Kent County, Rhode Island. It was built in 1978, so it is 47 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 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 1,386 vehicles a day, roughly 9% of them trucks, projected to reach 1,525 by 2041. The structure is 36 ft (10.9 m) long and 19 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMaple Valley RD
CrossesFlat River
Location0.3 MI N of JCT Ri 117
RouteCity Street 0
CountyKent County
StateRhode Island
Coordinates41.71448, -71.65228
Functional classUrban Collector

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
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span17 ft (5.3 m)
Deck width19 ft (5.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,386 (2021)
Projected traffic1,525 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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$1.4 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Maple Valley RD over Flat River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Maple Valley RD over Flat River 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 March 2024.

How much traffic does Maple Valley RD over Flat River carry?

About 1,386 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Maple Valley RD over Flat River?

The structure is 36 ft (10.9 m) long with a longest span of 17 ft (5.3 m) and a deck 19 ft wide.

Who owns Maple Valley RD over Flat River?

It is owned by the Town or Township Highway Agency.