US Bridges

Airline RD over Narraguagus River

Fair

Washington County, Maine · 0.5 M NE of T22 Md · Structure no. 5648

Built
1957
68 years old, rebuilt 1997
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
2,872
2016 count
Owner
State
State Highway Agency

About this bridge

Airline RD over Narraguagus River is a steel stringer/multi-beam or girder carrying Airline RD over Narraguagus River in Washington County, Maine. It was built in 1957 and reconstructed in 1997, so it is 68 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 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 2,872 vehicles a day, roughly 5% of them trucks, projected to reach 4,021 by 2036. The structure is 68 ft (20.8 m) long and 43 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesAirline RD
CrossesNarraguagus River
Location0.5 M NE of T22 Md
RouteState Highway 9
StateMaine
Coordinates44.84247, -68.06986
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length68 ft (20.8 m)
Longest span63 ft (19.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,872 (2016)
Projected traffic4,021 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Airline RD over Narraguagus River built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1997.

What condition is Airline RD over Narraguagus River 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 December 2024.

How much traffic does Airline RD over Narraguagus River carry?

About 2,872 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Airline RD over Narraguagus River?

The structure is 68 ft (20.8 m) long with a longest span of 63 ft (19.2 m) and a deck 43 ft wide.

Who owns Airline RD over Narraguagus River?

It is owned by the State Highway Agency.