US Bridges

HWY Broad ST over Water Assabet River

Good

Middlesex County, Massachusetts · 100 Ft S of Water ST · Structure no. H25005APGMUNNBI

Built
2005
20 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
97 ft
1 main span
Daily traffic
13,000
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Broad ST over Water Assabet River is a steel stringer/multi-beam or girder carrying HWY Broad ST over Water Assabet River in Middlesex County, Massachusetts. It was built in 2005, so it is 20 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 13,000 vehicles a day, roughly 5% of them trucks, projected to reach 12,161 by 2031. The structure is 97 ft (29.7 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Broad ST
CrossesWater Assabet River
Location100 Ft S of Water ST
RouteCity Street 0
Coordinates42.38794, -71.56378
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.4 US tons
Inventory rating53.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length97 ft (29.7 m)
Longest span92 ft (28 m)
Deck width39 ft (11.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2024)
Projected traffic12,161 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$2.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Broad ST over Water Assabet River built?

It was built in 2005, making it 20 years old in 2025.

What condition is HWY Broad ST over Water Assabet 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 September 2024.

How much traffic does HWY Broad ST over Water Assabet River carry?

About 13,000 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is HWY Broad ST over Water Assabet River?

The structure is 97 ft (29.7 m) long with a longest span of 92 ft (28 m) and a deck 39 ft wide.

Who owns HWY Broad ST over Water Assabet River?

It is owned by the Town or Township Highway Agency.