US Bridges

School ST over Houghton Brook

Fair

Franklin County, Maine · 0.1MI SE RTE 142 · Structure no. 5066

Built
1926
99 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
45 ft
1 main span
Daily traffic
948
2016 count
Owner
State
State Highway Agency

About this bridge

School ST over Houghton Brook is a concrete tee beam carrying School ST over Houghton Brook in Franklin County, Maine. It was built in 1926, so it is 99 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 948 vehicles a day, roughly 5% of them trucks, projected to reach 1,517 by 2036. The structure is 45 ft (13.6 m) long and 28 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesSchool ST
CrossesHoughton Brook
Location0.1MI SE RTE 142
RouteCounty Highway 156
CountyFranklin County
StateMaine
Coordinates44.69796, -70.41913
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length45 ft (13.6 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic948 (2016)
Projected traffic1,517 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.2 mi (39 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 School ST over Houghton Brook built?

It was built in 1926, making it 99 years old in 2025.

What condition is School ST over Houghton 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 July 2023.

How much traffic does School ST over Houghton Brook carry?

About 948 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is School ST over Houghton Brook?

The structure is 45 ft (13.6 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns School ST over Houghton Brook?

It is owned by the State Highway Agency.