US Bridges

ST 24 NB (line B) over ST 24 SB (line C)

Fair

Bristol County, Massachusetts · Ramp 195E to 24N @ Watupa · Structure no. F020733MLDOTNBI

Built
1961
64 years old, rebuilt 1991
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
3 main spans
Daily traffic
7,534
2023 count
Owner
State
State Highway Agency

About this bridge

ST 24 NB (line B) over ST 24 SB (line C) is a steel stringer/multi-beam or girder carrying ST 24 NB (line B) over ST 24 SB (line C) in Bristol County, Massachusetts. It was built in 1961 and reconstructed in 1991, so it is 64 years old, older 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 7,534 vehicles a day, roughly 4% of them trucks, projected to reach 31,586 by 2031. The structure is 155 ft (47.2 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesST 24 NB (line B)
CrossesST 24 SB (line C)
LocationRamp 195E to 24N @ Watupa
RouteState Highway 24
CountyBristol County
StateMassachusetts
Coordinates41.68211, -71.12173
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.1 US tons
Inventory rating53.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length155 ft (47.2 m)
Longest span70 ft (21.3 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,534 (2023)
Projected traffic31,586 by 2031
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$833,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 24 NB (line B) over ST 24 SB (line C) built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1991.

What condition is ST 24 NB (line B) over ST 24 SB (line C) 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 May 2024.

How much traffic does ST 24 NB (line B) over ST 24 SB (line C) carry?

About 7,534 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is ST 24 NB (line B) over ST 24 SB (line C)?

The structure is 155 ft (47.2 m) long with a longest span of 70 ft (21.3 m) and a deck 29 ft wide.

Who owns ST 24 NB (line B) over ST 24 SB (line C)?

It is owned by the State Highway Agency.