US Bridges

Hamlin RD over Martin Brook

Poor

Aroostook County, Maine · 2.8 MI NW of Caswell · Structure no. 2516

Built
1955
70 years old
Condition
Poor
inspected November 2024
Type
Culvert
Steel
Length
31 ft
2 main spans
Daily traffic
580
2016 count
Owner
State
State Highway Agency

About this bridge

Hamlin RD over Martin Brook is a steel culvert carrying Hamlin RD over Martin Brook in Aroostook County, Maine. It was built in 1955, so it is 70 years old, older than the Maine average of 53.7 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.

It carries about 580 vehicles a day, roughly 5% of them trucks, projected to reach 928 by 2036. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 32.9 mi (53 km).

Location

Open in Google Maps
CarriesHamlin RD
CrossesMartin Brook
Location2.8 MI NW of Caswell
RouteState Highway 1
CountyAroostook County
StateMaine
Coordinates47.08173, -67.82591
Functional classRural Major Collector

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating71.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length31 ft (9.4 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic580 (2016)
Projected traffic928 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 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 Hamlin RD over Martin Brook built?

It was built in 1955, making it 70 years old in 2025.

What condition is Hamlin RD over Martin Brook 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 November 2024.

How much traffic does Hamlin RD over Martin Brook carry?

About 580 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Hamlin RD over Martin Brook?

The structure is 31 ft (9.4 m) long with a longest span of 13 ft (4.1 m).

Who owns Hamlin RD over Martin Brook?

It is owned by the State Highway Agency.