US Bridges

Houlton RD over B&a RR

Fair

Aroostook County, Maine · 1.0 MI S of JCT RTE 161 · Structure no. 3258

Built
1958
67 years old, rebuilt 1989
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
166 ft
3 main spans
Daily traffic
4,300
2016 count
Owner
State
State Highway Agency

About this bridge

Houlton RD over B&a RR is a steel stringer/multi-beam or girder carrying Houlton RD over B&a RR in Aroostook County, Maine. It was built in 1958 and reconstructed in 1989, so it is 67 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 4,300 vehicles a day, roughly 5% of them trucks, projected to reach 6,020 by 2036. The structure is 166 ft (50.6 m) long and 33 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesHoulton RD
CrossesB&a RR
Location1.0 MI S of JCT RTE 161
RouteState Highway 1
CountyAroostook County
StateMaine
Coordinates46.76326, -67.85295
Functional classRural 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
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.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length166 ft (50.6 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2016)
Projected traffic6,020 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Houlton RD over B&a RR built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1989.

What condition is Houlton RD over B&a RR 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 2024.

How much traffic does Houlton RD over B&a RR carry?

About 4,300 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Houlton RD over B&a RR?

The structure is 166 ft (50.6 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns Houlton RD over B&a RR?

It is owned by the State Highway Agency.