US Bridges

Coast Guard Beach over Cranberry Bog

Fair

Barnstable County, Massachusetts · 1.5 Miles from Salt Pond · Structure no. 1730001P0000000

Built
1986
39 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
310 ft
8 main spans
Daily traffic
500
2024 count
Owner
Federal
National Park Service

About this bridge

Coast Guard Beach over Cranberry Bog is a wood or timber stringer/multi-beam or girder carrying Coast Guard Beach over Cranberry Bog in Barnstable County, Massachusetts. It was built in 1986, so it is 39 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 500 vehicles a day, projected to reach 550 by 2044. The structure is 310 ft (94.5 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCoast Guard Beach
CrossesCranberry Bog
Location1.5 Miles from Salt Pond
RouteFederal Lands Road 216
CountyBarnstable County
StateMassachusetts
Coordinates41.84544, -69.94797
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans8
Design loadH 15
Structure length310 ft (94.5 m)
Longest span39 ft (11.9 m)
Deck width36 ft (11 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2024)
Projected traffic550 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$45,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Coast Guard Beach over Cranberry Bog built?

It was built in 1986, making it 39 years old in 2025.

What condition is Coast Guard Beach over Cranberry Bog 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 Coast Guard Beach over Cranberry Bog carry?

About 500 vehicles per day (2024 count).

How long is Coast Guard Beach over Cranberry Bog?

The structure is 310 ft (94.5 m) long with a longest span of 39 ft (11.9 m) and a deck 36 ft wide.

Who owns Coast Guard Beach over Cranberry Bog?

It is owned by the National Park Service.