US Bridges

ST129 Richmond RD over Water Middlesex Canal

Fair

Middlesex County, Massachusetts · .32 KM W of RTE 38 · Structure no. W380382KXDOTNBI

Built
1974
51 years old
Condition
Fair
inspected December 2023
Type
Culvert
Steel
Length
31 ft
1 main span
Daily traffic
23,700
2017 count
Owner
State
State Highway Agency

About this bridge

ST129 Richmond RD over Water Middlesex Canal is a steel culvert carrying ST129 Richmond RD over Water Middlesex Canal in Middlesex County, Massachusetts. It was built in 1974, so it is 51 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 23,700 vehicles a day, roughly 5% of them trucks, projected to reach 31,586 by 2032. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesST129 Richmond RD
CrossesWater Middlesex Canal
Location.32 KM W of RTE 38
RouteState Highway 129
CountyMiddlesex County
StateMassachusetts
Coordinates42.55668, -71.18611
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating48.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length31 ft (9.3 m)
Longest span31 ft (9.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,700 (2017)
Projected traffic31,586 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$251,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST129 Richmond RD over Water Middlesex Canal built?

It was built in 1974, making it 51 years old in 2025.

What condition is ST129 Richmond RD over Water Middlesex Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does ST129 Richmond RD over Water Middlesex Canal carry?

About 23,700 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is ST129 Richmond RD over Water Middlesex Canal?

The structure is 31 ft (9.3 m) long with a longest span of 31 ft (9.3 m).

Who owns ST129 Richmond RD over Water Middlesex Canal?

It is owned by the State Highway Agency.