US Bridges

HWY Cambrdge Tpk over Water Mill Brook

Good

Middlesex County, Massachusetts · 0.8 MI NW of ST-2 · Structure no. C19017C0HMUNNBI

Built
2020
5 years old
Condition
Good
inspected February 2024
Type
Slab
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
3,900
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY Cambrdge Tpk over Water Mill Brook is a prestressed concrete slab carrying HWY Cambrdge Tpk over Water Mill Brook in Middlesex County, Massachusetts. It was built in 2020, so it is 5 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 3,900 vehicles a day, roughly 1% of them trucks. The structure is 42 ft (12.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY Cambrdge Tpk
CrossesWater Mill Brook
Location0.8 MI NW of ST-2
RouteCity Street 0
Coordinates42.45436, -71.336
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length42 ft (12.9 m)
Longest span38 ft (11.7 m)
Deck width34 ft (10.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2024)
Projected traffic—
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Cambrdge Tpk over Water Mill Brook built?

It was built in 2020, making it 5 years old in 2025.

What condition is HWY Cambrdge Tpk over Water Mill 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 February 2024.

How much traffic does HWY Cambrdge Tpk over Water Mill Brook carry?

About 3,900 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is HWY Cambrdge Tpk over Water Mill Brook?

The structure is 42 ft (12.9 m) long with a longest span of 38 ft (11.7 m) and a deck 34 ft wide.

Who owns HWY Cambrdge Tpk over Water Mill Brook?

It is owned by the City or Municipal Highway Agency.