US Bridges

US 6 Eb/Md Cp HWY over ST132 Iyannough RD

Fair

Barnstable County, Massachusetts · 1 M E of Oak ST · Structure no. B0101946HDOTNBI

Built
1966
59 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
170 ft
2 main spans
Daily traffic
23,143
2025 count
Owner
State
State Highway Agency

About this bridge

US 6 Eb/Md Cp HWY over ST132 Iyannough RD is a steel stringer/multi-beam or girder carrying US 6 Eb/Md Cp HWY over ST132 Iyannough RD in Barnstable County, Massachusetts. It was built in 1966, so it is 59 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 23,143 vehicles a day, roughly 5% of them trucks, projected to reach 69,331 by 2032. The structure is 170 ft (51.8 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesUS 6 Eb/Md Cp HWY
CrossesST132 Iyannough RD
Location1 M E of Oak ST
RouteU.S. Route 6
CountyBarnstable County
StateMassachusetts
Coordinates41.68769, -70.33577
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.8 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length170 ft (51.8 m)
Longest span87 ft (26.6 m)
Deck width44 ft (13.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,143 (2025)
Projected traffic69,331 by 2032
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 6 Eb/Md Cp HWY over ST132 Iyannough RD built?

It was built in 1966, making it 59 years old in 2025.

What condition is US 6 Eb/Md Cp HWY over ST132 Iyannough RD 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 February 2025.

How much traffic does US 6 Eb/Md Cp HWY over ST132 Iyannough RD carry?

About 23,143 vehicles per day (2025 count), of which roughly 5% are trucks.

How long is US 6 Eb/Md Cp HWY over ST132 Iyannough RD?

The structure is 170 ft (51.8 m) long with a longest span of 87 ft (26.6 m) and a deck 44 ft wide.

Who owns US 6 Eb/Md Cp HWY over ST132 Iyannough RD?

It is owned by the State Highway Agency.