US Bridges

HWY South RD over Water Elm Brook

PoorPosted for load

Middlesex County, Massachusetts · .6 MI S of Rt 4 & 225 · Structure no. B040102B7MUNNBI

Built
1970
55 years old
Condition
Poor
inspected February 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
3,750
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY South RD over Water Elm Brook is a concrete culvert carrying HWY South RD over Water Elm Brook in Middlesex County, Massachusetts. It was built in 1970, so it is 55 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 3,750 vehicles a day, roughly 7% of them trucks, projected to reach 6,791 by 2033. The structure is 22 ft (6.7 m) long and 52 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHWY South RD
CrossesWater Elm Brook
Location.6 MI S of Rt 4 & 225
RouteCity Street 0
Coordinates42.48472, -71.27714
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating11.5 US tons
Inventory rating7.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width52 ft (15.7 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2024)
Projected traffic6,791 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY South RD over Water Elm Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is HWY South RD over Water Elm Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does HWY South RD over Water Elm Brook carry?

About 3,750 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is HWY South RD over Water Elm Brook?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 52 ft wide.

Who owns HWY South RD over Water Elm Brook?

It is owned by the Town or Township Highway Agency.