US Bridges

Route 198 over Natchaug River

Fair

Windham County, Connecticut · 0.6 Mile North of Route 6 · Structure no. 01537

Built
1926
99 years old
Condition
Fair
inspected May 2023
Type
Arch - Deck
Concrete
Length
75 ft
1 main span
Daily traffic
4,200
2016 count
Owner
State
State Highway Agency

About this bridge

Route 198 over Natchaug River is a concrete arch - deck carrying Route 198 over Natchaug River in Windham County, Connecticut. It was built in 1926, so it is 99 years old, older than the Connecticut average of 56.7 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 4,200 vehicles a day, roughly 3% of them trucks, projected to reach 6,241 by 2036. The structure is 75 ft (22.9 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesRoute 198
CrossesNatchaug River
Location0.6 Mile North of Route 6
RouteState Highway 198
Coordinates41.77821, -72.13138
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating42.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2016)
Projected traffic6,241 by 2036
Trucks3%
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 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 Route 198 over Natchaug River built?

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

What condition is Route 198 over Natchaug River 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 May 2023.

How much traffic does Route 198 over Natchaug River carry?

About 4,200 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is Route 198 over Natchaug River?

The structure is 75 ft (22.9 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns Route 198 over Natchaug River?

It is owned by the State Highway Agency.