US Bridges

HWY River ST over Water Monatiquot River

Fair

Norfolk County, Massachusetts · .32 KM W of JCT Middle ST · Structure no. B2100933TMUNNBI

Built
1978
47 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
646
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY River ST over Water Monatiquot River is a prestressed concrete slab carrying HWY River ST over Water Monatiquot River in Norfolk County, Massachusetts. It was built in 1978, so it is 47 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 646 vehicles a day, roughly 40% of them trucks, projected to reach 2,685 by 2032. The structure is 31 ft (9.5 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHWY River ST
CrossesWater Monatiquot River
Location.32 KM W of JCT Middle ST
RouteCity Street 0
Coordinates42.22008, -70.99902
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.8 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length31 ft (9.5 m)
Longest span29 ft (8.9 m)
Deck width33 ft (10.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic646 (2023)
Projected traffic2,685 by 2032
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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$985,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY River ST over Water Monatiquot River built?

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

What condition is HWY River ST over Water Monatiquot 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 June 2023.

How much traffic does HWY River ST over Water Monatiquot River carry?

About 646 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is HWY River ST over Water Monatiquot River?

The structure is 31 ft (9.5 m) long with a longest span of 29 ft (8.9 m) and a deck 33 ft wide.

Who owns HWY River ST over Water Monatiquot River?

It is owned by the Town or Township Highway Agency.