US Bridges

HWY Middlesex ST over Comb Arch ST & Bmrr

Fair

Middlesex County, Massachusetts · 1.9 KM E of Chelmsford · Structure no. L150622C3MUNNBI

Built
1959
66 years old
Condition
Fair
inspected June 2024
Type
Frame
Concrete Continuous
Length
78 ft
2 main spans
Daily traffic
8,692
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY Middlesex ST over Comb Arch ST & Bmrr is a concrete continuous frame carrying HWY Middlesex ST over Comb Arch ST & Bmrr in Middlesex County, Massachusetts. It was built in 1959, so it is 66 years old, older 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 5 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 8,692 vehicles a day, roughly 6% of them trucks, projected to reach 34,903 by 2031. The structure is 78 ft (23.8 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Middlesex ST
CrossesComb Arch ST & Bmrr
Location1.9 KM E of Chelmsford
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.63926, -71.31657
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating58 US tons
Inventory rating34.7 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length78 ft (23.8 m)
Longest span42 ft (12.8 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,692 (2023)
Projected traffic34,903 by 2031
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Middlesex ST over Comb Arch ST & Bmrr built?

It was built in 1959, making it 66 years old in 2025.

What condition is HWY Middlesex ST over Comb Arch ST & Bmrr 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 June 2024.

How much traffic does HWY Middlesex ST over Comb Arch ST & Bmrr carry?

About 8,692 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is HWY Middlesex ST over Comb Arch ST & Bmrr?

The structure is 78 ft (23.8 m) long with a longest span of 42 ft (12.8 m) and a deck 56 ft wide.

Who owns HWY Middlesex ST over Comb Arch ST & Bmrr?

It is owned by the City or Municipal Highway Agency.