US Bridges

City Semny over Gunners Brook

Fair

Washington County, Vermont · Seminary Street · Structure no. 206026000412012

Built
1919
106 years old, rebuilt 1972
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
2,800
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

City Semny over Gunners Brook is a concrete slab carrying City Semny over Gunners Brook in Washington County, Vermont. It was built in 1919 and reconstructed in 1972, so it is 106 years old, older than the Vermont average of 60.8 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 2,800 vehicles a day, roughly 3% of them trucks, projected to reach 2,940 by 2026. The structure is 25 ft (7.6 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCity Semny
CrossesGunners Brook
LocationSeminary Street
RouteCity Street SEMNY
StateVermont
Coordinates44.20417, -72.5061
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width46 ft (14.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2016)
Projected traffic2,940 by 2026
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 City Semny over Gunners Brook built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1972.

What condition is City Semny over Gunners 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 2024.

How much traffic does City Semny over Gunners Brook carry?

About 2,800 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is City Semny over Gunners Brook?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 46 ft wide.

Who owns City Semny over Gunners Brook?

It is owned by the City or Municipal Highway Agency.