US Bridges

Anson RD over Hilton Brook

Fair

Somerset County, Maine · 1.3 MI S Townline · Structure no. 3688

Built
1964
61 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
829
2016 count
Owner
State
State Highway Agency

About this bridge

Anson RD over Hilton Brook is a concrete culvert carrying Anson RD over Hilton Brook in Somerset County, Maine. It was built in 1964, so it is 61 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 829 vehicles a day, roughly 5% of them trucks, projected to reach 1,326 by 2036. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesAnson RD
CrossesHilton Brook
Location1.3 MI S Townline
RouteCounty Highway 43
StateMaine
Coordinates44.76635, -69.90861
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length23 ft (7.1 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic829 (2016)
Projected traffic1,326 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway 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 Anson RD over Hilton Brook built?

It was built in 1964, making it 61 years old in 2025.

What condition is Anson RD over Hilton 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 November 2024.

How much traffic does Anson RD over Hilton Brook carry?

About 829 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Anson RD over Hilton Brook?

The structure is 23 ft (7.1 m) long with a longest span of 20 ft (6.2 m).

Who owns Anson RD over Hilton Brook?

It is owned by the State Highway Agency.