US Bridges

ST109 High ST over I 95 /128 NB

Good

Norfolk County, Massachusetts · 109 at I-95 NB · Structure no. D05042B1MDOTNBI

Built
2015
10 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
118 ft
1 main span
Daily traffic
29,741
2024 count
Owner
State
State Highway Agency

About this bridge

ST109 High ST over I 95 /128 NB is a steel stringer/multi-beam or girder carrying ST109 High ST over I 95 /128 NB in Norfolk County, Massachusetts. It was built in 2015, so it is 10 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 29,741 vehicles a day, roughly 7% of them trucks. The structure is 118 ft (36 m) long and 85 ft wide.

Location

Open in Google Maps
CarriesST109 High ST
CrossesI 95 /128 NB
Location109 at I-95 NB
RouteState Highway 109
CountyNorfolk County
StateMassachusetts
Coordinates42.24452, -71.20178
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109.1 US tons
Inventory rating65.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length118 ft (36 m)
Longest span116 ft (35.4 m)
Deck width85 ft (25.9 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,741 (2024)
Projected traffic—
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$937,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST109 High ST over I 95 /128 NB built?

It was built in 2015, making it 10 years old in 2025.

What condition is ST109 High ST over I 95 /128 NB 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 June 2024.

How much traffic does ST109 High ST over I 95 /128 NB carry?

About 29,741 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is ST109 High ST over I 95 /128 NB?

The structure is 118 ft (36 m) long with a longest span of 116 ft (35.4 m) and a deck 85 ft wide.

Who owns ST109 High ST over I 95 /128 NB?

It is owned by the State Highway Agency.