US Bridges

Main RD over Olamon Stream

Fair

Penobscot County, Maine · 0.5 MI S of Passadumkeag · Structure no. 3727

Built
1940
85 years old, rebuilt 1999
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
99 ft
2 main spans
Daily traffic
1,845
2016 count
Owner
State
State Highway Agency

About this bridge

Main RD over Olamon Stream is a steel stringer/multi-beam or girder carrying Main RD over Olamon Stream in Penobscot County, Maine. It was built in 1940 and reconstructed in 1999, so it is 85 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 1,845 vehicles a day, roughly 5% of them trucks, projected to reach 2,768 by 2036. The structure is 99 ft (30.2 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMain RD
CrossesOlamon Stream
Location0.5 MI S of Passadumkeag
RouteState Highway 2
CountyPenobscot County
StateMaine
Coordinates45.1276, -68.61159
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating51.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length99 ft (30.2 m)
Longest span48 ft (14.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,845 (2016)
Projected traffic2,768 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Main RD over Olamon Stream built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1999.

What condition is Main RD over Olamon 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 October 2024.

How much traffic does Main RD over Olamon Stream carry?

About 1,845 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main RD over Olamon Stream?

The structure is 99 ft (30.2 m) long with a longest span of 48 ft (14.7 m) and a deck 33 ft wide.

Who owns Main RD over Olamon Stream?

It is owned by the State Highway Agency.