US Bridges

HWY Concord ST over Water Charles River

Fair

Middlesex County, Massachusetts · @ Weston Tl = W29007 · Structure no. N120082CMMUNNBI

Built
1907
118 years old
Condition
Fair
inspected August 2023
Type
Arch - Deck
Concrete
Length
81 ft
2 main spans
Daily traffic
7,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

HWY Concord ST over Water Charles River is a concrete arch - deck carrying HWY Concord ST over Water Charles River in Middlesex County, Massachusetts. It was built in 1907, so it is 118 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 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 7,500 vehicles a day, roughly 3% of them trucks, projected to reach 12,792 by 2032. The structure is 81 ft (24.7 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesHWY Concord ST
CrossesWater Charles River
Location@ Weston Tl = W29007
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.33057, -71.26794
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating55.2 US tons
Inventory rating33.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span38 ft (11.5 m)
Deck width45 ft (13.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2023)
Projected traffic12,792 by 2032
Trucks3%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Concord ST over Water Charles River built?

It was built in 1907, making it 118 years old in 2025.

What condition is HWY Concord ST over Water Charles River 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 August 2023.

How much traffic does HWY Concord ST over Water Charles River carry?

About 7,500 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is HWY Concord ST over Water Charles River?

The structure is 81 ft (24.7 m) long with a longest span of 38 ft (11.5 m) and a deck 45 ft wide.

Who owns HWY Concord ST over Water Charles River?

It is owned by the City or Municipal Highway Agency.