US Bridges

Back RD over Brown Brook

Fair

Piscataquis County, Maine · 0.3 MI SE of Davidson RD · Structure no. 5657

Built
1956
69 years old, rebuilt 2013
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
296
2016 count
Owner
State
State Highway Agency

About this bridge

Back RD over Brown Brook is a steel culvert carrying Back RD over Brown Brook in Piscataquis County, Maine. It was built in 1956 and reconstructed in 2013, so it is 69 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 296 vehicles a day, roughly 5% of them trucks, projected to reach 474 by 2036. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesBack RD
CrossesBrown Brook
Location0.3 MI SE of Davidson RD
RouteCity Street 0
CountyPiscataquis County
StateMaine
Coordinates45.18701, -69.43628
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating79.3 US tons
Inventory rating61.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length32 ft (9.8 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic296 (2016)
Projected traffic474 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Back RD over Brown Brook built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2013.

What condition is Back RD over Brown 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 2023.

How much traffic does Back RD over Brown Brook carry?

About 296 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Back RD over Brown Brook?

The structure is 32 ft (9.8 m) long with a longest span of 14 ft (4.2 m).

Who owns Back RD over Brown Brook?

It is owned by the State Highway Agency.