US Bridges

ST 79 NB over ST 24 SB

Fair

Bristol County, Massachusetts · ST 79 at ST 24 · Structure no. F020503VDDOTNBI

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
169 ft
1 main span
Daily traffic
12,398
2022 count
Owner
State
State Highway Agency

About this bridge

ST 79 NB over ST 24 SB is a steel stringer/multi-beam or girder carrying ST 79 NB over ST 24 SB in Bristol County, Massachusetts. It was built in 1962, so it is 63 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 5 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 12,398 vehicles a day, roughly 5% of them trucks, projected to reach 33,165 by 2032. The structure is 169 ft (51.5 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST 79 NB
CrossesST 24 SB
LocationST 79 at ST 24
RouteState Highway 79
CountyBristol County
StateMassachusetts
Coordinates41.74612, -71.12197
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.1 US tons
Inventory rating31.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length169 ft (51.5 m)
Longest span150 ft (45.7 m)
Deck width45 ft (13.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,398 (2022)
Projected traffic33,165 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$6.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 79 NB over ST 24 SB built?

It was built in 1962, making it 63 years old in 2025.

What condition is ST 79 NB over ST 24 SB 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 2023.

How much traffic does ST 79 NB over ST 24 SB carry?

About 12,398 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is ST 79 NB over ST 24 SB?

The structure is 169 ft (51.5 m) long with a longest span of 150 ft (45.7 m) and a deck 45 ft wide.

Who owns ST 79 NB over ST 24 SB?

It is owned by the State Highway Agency.