US Bridges

Inv 2100313 RD over Avalanche Brook

Fair

Piscataquis County, Maine · 3.5 MI N Town Line · Structure no. 5497

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
74
2016 count
Owner
State
Other State Agency

About this bridge

Inv 2100313 RD over Avalanche Brook is a steel culvert carrying Inv 2100313 RD over Avalanche Brook in Piscataquis County, Maine. It was built in 1970, so it is 55 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 74 vehicles a day, roughly 5% of them trucks, projected to reach 118 by 2036. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesInv 2100313 RD
CrossesAvalanche Brook
Location3.5 MI N Town Line
RouteFederal Lands Road 0
CountyPiscataquis County
StateMaine
Coordinates45.90188, -68.84225
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.3 US tons
Inventory rating70.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length21 ft (6.3 m)
Longest span21 ft (6.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74 (2016)
Projected traffic118 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State 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 Inv 2100313 RD over Avalanche Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is Inv 2100313 RD over Avalanche Brook 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 Inv 2100313 RD over Avalanche Brook carry?

About 74 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Inv 2100313 RD over Avalanche Brook?

The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m).

Who owns Inv 2100313 RD over Avalanche Brook?

It is owned by the Other State Agency.