US Bridges

HWY Main ST over Water Salmon Brook

Good

Middlesex County, Massachusetts · .5 Mi. N. of RTE 113 · Structure no. D13001BLGMUNNBI

Built
2014
11 years old
Condition
Good
inspected November 2024
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
2,700
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Main ST over Water Salmon Brook is a concrete frame carrying HWY Main ST over Water Salmon Brook in Middlesex County, Massachusetts. It was built in 2014, so it is 11 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,700 vehicles a day, roughly 9% of them trucks. The structure is 22 ft (6.7 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesHWY Main ST
CrossesWater Salmon Brook
Location.5 Mi. N. of RTE 113
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.6782, -71.4934
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
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating42.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length22 ft (6.7 m)
Longest span22 ft (6.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2024)
Projected traffic—
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$797,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Main ST over Water Salmon Brook built?

It was built in 2014, making it 11 years old in 2025.

What condition is HWY Main ST over Water Salmon Brook 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 November 2024.

How much traffic does HWY Main ST over Water Salmon Brook carry?

About 2,700 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is HWY Main ST over Water Salmon Brook?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.6 m) and a deck 31 ft wide.

Who owns HWY Main ST over Water Salmon Brook?

It is owned by the Town or Township Highway Agency.