US Bridges

ST 3 SB over HWY Ramp C (q Adams)

Good

Norfolk County, Massachusetts · At ST 3 SB · Structure no. B2106034VDOTNBI

Built
1978
47 years old, rebuilt 2018
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
1 main span
Daily traffic
38,798
2023 count
Owner
State
State Highway Agency

About this bridge

ST 3 SB over HWY Ramp C (q Adams) is a steel stringer/multi-beam or girder carrying ST 3 SB over HWY Ramp C (q Adams) in Norfolk County, Massachusetts. It was built in 1978 and reconstructed in 2018, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 38,798 vehicles a day, roughly 4% of them trucks, projected to reach 218,259 by 2032. The structure is 84 ft (25.6 m) long and 57 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST 3 SB
CrossesHWY Ramp C (q Adams)
LocationAt ST 3 SB
RouteState Highway 0
CountyNorfolk County
StateMassachusetts
Coordinates42.22773, -71.01025
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length84 ft (25.6 m)
Longest span73 ft (22.4 m)
Deck width57 ft (17.5 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic38,798 (2023)
Projected traffic218,259 by 2032
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 3 SB over HWY Ramp C (q Adams) built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2018.

What condition is ST 3 SB over HWY Ramp C (q Adams) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does ST 3 SB over HWY Ramp C (q Adams) carry?

About 38,798 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is ST 3 SB over HWY Ramp C (q Adams)?

The structure is 84 ft (25.6 m) long with a longest span of 73 ft (22.4 m) and a deck 57 ft wide.

Who owns ST 3 SB over HWY Ramp C (q Adams)?

It is owned by the State Highway Agency.