US Bridges

ST 24 over Water Assonet River

Poor

Bristol County, Massachusetts · .7 MI N of ST 79 · Structure no. F090083MUDOTNBI

Built
1951
74 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
42,505
2022 count
Owner
State
State Highway Agency

About this bridge

ST 24 over Water Assonet River is a steel continuous stringer/multi-beam or girder carrying ST 24 over Water Assonet River in Bristol County, Massachusetts. It was built in 1951, so it is 74 years old, older than the Massachusetts average of 63.8 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 42,505 vehicles a day, roughly 10% of them trucks, projected to reach 67,752 by 2032. The structure is 158 ft (48.2 m) long and 97 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesST 24
CrossesWater Assonet River
Location.7 MI N of ST 79
RouteState Highway 24
Coordinates41.7945, -71.07745
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length158 ft (48.2 m)
Longest span52 ft (15.8 m)
Deck width97 ft (29.5 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,505 (2022)
Projected traffic67,752 by 2032
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$14.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 24 over Water Assonet River built?

It was built in 1951, making it 74 years old in 2025.

What condition is ST 24 over Water Assonet 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 August 2023.

How much traffic does ST 24 over Water Assonet River carry?

About 42,505 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is ST 24 over Water Assonet River?

The structure is 158 ft (48.2 m) long with a longest span of 52 ft (15.8 m) and a deck 97 ft wide.

Who owns ST 24 over Water Assonet River?

It is owned by the State Highway Agency.