US Bridges

Inv 2100311 RD over Black Brook

Fair

Piscataquis County, Maine · 3 MI W T5 R9 Tl · Structure no. 0959

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
28 ft
2 main spans
Daily traffic
144
2016 count
Owner
State
Other State Agency

About this bridge

Inv 2100311 RD over Black Brook is a steel culvert carrying Inv 2100311 RD over Black Brook in Piscataquis County, Maine. It was built in 1981, so it is 44 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 144 vehicles a day, roughly 5% of them trucks, projected to reach 230 by 2036. The structure is 28 ft (8.4 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesInv 2100311 RD
CrossesBlack Brook
Location3 MI W T5 R9 Tl
RouteFederal Lands Road 0
CountyPiscataquis County
StateMaine
Coordinates46.1008, -69.00568
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.7 US tons
Inventory rating81.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length28 ft (8.4 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic144 (2016)
Projected traffic230 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 2100311 RD over Black Brook built?

It was built in 1981, making it 44 years old in 2025.

What condition is Inv 2100311 RD over Black 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 2100311 RD over Black Brook carry?

About 144 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Inv 2100311 RD over Black Brook?

The structure is 28 ft (8.4 m) long with a longest span of 13 ft (3.9 m).

Who owns Inv 2100311 RD over Black Brook?

It is owned by the Other State Agency.