US Bridges

ST 6 A/Crnbry HWY over Water Scorton River

Fair

Barnstable County, Massachusetts · 1.7 M N of Barnstable Tl · Structure no. S040014A4DOTNBI

Built
1926
99 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
68 ft
2 main spans
Daily traffic
4,214
2023 count
Owner
State
State Highway Agency

About this bridge

ST 6 A/Crnbry HWY over Water Scorton River is a concrete continuous tee beam carrying ST 6 A/Crnbry HWY over Water Scorton River in Barnstable County, Massachusetts. It was built in 1926, so it is 99 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 4,214 vehicles a day, roughly 7% of them trucks, projected to reach 21,400 by 2032. The structure is 68 ft (20.7 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesST 6 A/Crnbry HWY
CrossesWater Scorton River
Location1.7 M N of Barnstable Tl
RouteState Highway 6A
Coordinates41.73646, -70.42577
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.2 US tons
Inventory rating24 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length68 ft (20.7 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,214 (2023)
Projected traffic21,400 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 6 A/Crnbry HWY over Water Scorton River built?

It was built in 1926, making it 99 years old in 2025.

What condition is ST 6 A/Crnbry HWY over Water Scorton 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 June 2023.

How much traffic does ST 6 A/Crnbry HWY over Water Scorton River carry?

About 4,214 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is ST 6 A/Crnbry HWY over Water Scorton River?

The structure is 68 ft (20.7 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns ST 6 A/Crnbry HWY over Water Scorton River?

It is owned by the State Highway Agency.