US Bridges

Auburn RD over Martin Stream

Fair

Androscoggin County, Maine · 2.5 MI N of JCT RTE 117 · Structure no. 2518

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
2 main spans
Daily traffic
12,535
2016 count
Owner
State
State Highway Agency

About this bridge

Auburn RD over Martin Stream is a prestressed concrete box beam or girders - multiple carrying Auburn RD over Martin Stream in Androscoggin County, Maine. It was built in 1991, so it is 34 years old, younger 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 12,535 vehicles a day, roughly 5% of them trucks, projected to reach 17,549 by 2036. The structure is 82 ft (25.1 m) long and 49 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

Location

Open in Google Maps
CarriesAuburn RD
CrossesMartin Stream
Location2.5 MI N of JCT RTE 117
RouteState Highway 4
CountyAndroscoggin County
StateMaine
Coordinates44.29001, -70.27099
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length82 ft (25.1 m)
Longest span40 ft (12.2 m)
Deck width49 ft (14.8 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,535 (2016)
Projected traffic17,549 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Auburn RD over Martin Stream built?

It was built in 1991, making it 34 years old in 2025.

What condition is Auburn RD over Martin Stream 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 August 2024.

How much traffic does Auburn RD over Martin Stream carry?

About 12,535 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Auburn RD over Martin Stream?

The structure is 82 ft (25.1 m) long with a longest span of 40 ft (12.2 m) and a deck 49 ft wide.

Who owns Auburn RD over Martin Stream?

It is owned by the State Highway Agency.