US Bridges

HWY Myrtle ST over Water Charles River

Good

Norfolk County, Massachusetts · .3 Mi. W. of Pleasant St. · Structure no. M23007ADLMUNNBI

Built
1996
29 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
1,800
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Myrtle ST over Water Charles River is a prestressed concrete box beam or girders - single or spread carrying HWY Myrtle ST over Water Charles River in Norfolk County, Massachusetts. It was built in 1996, so it is 29 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 1,800 vehicles a day, roughly 5% of them trucks, projected to reach 2,922 by 2031. The structure is 73 ft (22.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Myrtle ST
CrossesWater Charles River
Location.3 Mi. W. of Pleasant St.
RouteCity Street 0
Coordinates42.13349, -71.36186
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating96 US tons
Inventory rating57.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length73 ft (22.1 m)
Longest span71 ft (21.6 m)
Deck width32 ft (9.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2024)
Projected traffic2,922 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Myrtle ST over Water Charles River built?

It was built in 1996, making it 29 years old in 2025.

What condition is HWY Myrtle ST over Water Charles River 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 April 2024.

How much traffic does HWY Myrtle ST over Water Charles River carry?

About 1,800 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY Myrtle ST over Water Charles River?

The structure is 73 ft (22.1 m) long with a longest span of 71 ft (21.6 m) and a deck 32 ft wide.

Who owns HWY Myrtle ST over Water Charles River?

It is owned by the Town or Township Highway Agency.