US Bridges

Conbur Town Line over Little Trout Rvr

Fair

Franklin County, New York · 3.1 MI East of Constable · Structure no. 000000003337570

Built
1991
34 years old
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel
Length
75 ft
1 main span
Daily traffic
38
2020 count
Owner
County
County Highway Agency

About this bridge

Conbur Town Line over Little Trout Rvr is a steel truss - thru carrying Conbur Town Line over Little Trout Rvr in Franklin County, New York. It was built in 1991, so it is 34 years old, younger than the New York average of 53 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 38 vehicles a day, roughly 17% of them trucks, projected to reach 53 by 2040. The structure is 75 ft (22.9 m) long and 13 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesConbur Town Line
CrossesLittle Trout Rvr
Location3.1 MI East of Constable
CountyFranklin County
StateNew York
Coordinates44.92849, -74.2354
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating97 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span71 ft (21.6 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2020)
Projected traffic53 by 2040
Trucks17%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$943,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Conbur Town Line over Little Trout Rvr built?

It was built in 1991, making it 34 years old in 2025.

What condition is Conbur Town Line over Little Trout Rvr 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 2024.

How much traffic does Conbur Town Line over Little Trout Rvr carry?

About 38 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is Conbur Town Line over Little Trout Rvr?

The structure is 75 ft (22.9 m) long with a longest span of 71 ft (21.6 m) and a deck 13 ft wide.

Who owns Conbur Town Line over Little Trout Rvr?

It is owned by the County Highway Agency.