US Bridges

HWY Bwkr SB Onrp over Water Muddy River

PoorPosted for load

Suffolk County, Massachusetts · .2 MI S of ST RTE 2A · Structure no. B163654FGDOTNBI

Built
1965
60 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
225 ft
3 main spans
Daily traffic
18,470
2022 count
Owner
State
State Highway Agency

About this bridge

HWY Bwkr SB Onrp over Water Muddy River is a steel stringer/multi-beam or girder carrying HWY Bwkr SB Onrp over Water Muddy River in Suffolk County, Massachusetts. It was built in 1965, so it is 60 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 18,470 vehicles a day, projected to reach 32,376 by 2032. The structure is 225 ft (68.5 m) long and 31 ft wide.

CarriesHWY Bwkr SB Onrp
CrossesWater Muddy River
Location.2 MI S of ST RTE 2A
RouteU.S. Route 1
Coordinates42.35039, -71.09253
Functional classUrban Principal Arterial - Other Freeway or Expressway

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating34.5 US tons
Inventory rating20.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length225 ft (68.5 m)
Longest span74 ft (22.6 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,470 (2022)
Projected traffic32,376 by 2032
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$6.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Bwkr SB Onrp over Water Muddy River built?

It was built in 1965, making it 60 years old in 2025.

What condition is HWY Bwkr SB Onrp over Water Muddy River 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 July 2023.

How much traffic does HWY Bwkr SB Onrp over Water Muddy River carry?

About 18,470 vehicles per day (2022 count).

How long is HWY Bwkr SB Onrp over Water Muddy River?

The structure is 225 ft (68.5 m) long with a longest span of 74 ft (22.6 m) and a deck 31 ft wide.

Who owns HWY Bwkr SB Onrp over Water Muddy River?

It is owned by the State Highway Agency.