US Bridges

Houlton RD over Dyer Brook

Fair

Aroostook County, Maine · 0.4 MI E of JCT RTE 159 · Structure no. 2243

Built
1929
96 years old, rebuilt 1957
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
34 ft
1 main span
Daily traffic
1,308
2016 count
Owner
State
State Highway Agency

About this bridge

Houlton RD over Dyer Brook is a concrete tee beam carrying Houlton RD over Dyer Brook in Aroostook County, Maine. It was built in 1929 and reconstructed in 1957, so it is 96 years old, older than the Maine average of 53.7 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 1,308 vehicles a day, roughly 5% of them trucks, projected to reach 1,962 by 2036. The structure is 34 ft (10.4 m) long and 37 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

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CarriesHoulton RD
CrossesDyer Brook
Location0.4 MI E of JCT RTE 159
RouteState Highway 2
CountyAroostook County
StateMaine
Coordinates46.00966, -68.26077
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionNovember 2023
Inspection intervalevery 24 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length34 ft (10.4 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.3 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,308 (2016)
Projected traffic1,962 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Houlton RD over Dyer Brook built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1957.

What condition is Houlton RD over Dyer Brook 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 November 2023.

How much traffic does Houlton RD over Dyer Brook carry?

About 1,308 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Houlton RD over Dyer Brook?

The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns Houlton RD over Dyer Brook?

It is owned by the State Highway Agency.