US Bridges

SR 800 over Mad River

Good

Litchfield County, Connecticut · 100 Feet South of U.S. 44 · Structure no. 00617

Built
2022
3 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
3,800
2021 count
Owner
State
State Highway Agency

About this bridge

SR 800 over Mad River is a steel stringer/multi-beam or girder carrying SR 800 over Mad River in Litchfield County, Connecticut. It was built in 2022, so it is 3 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,800 vehicles a day, roughly 3% of them trucks, projected to reach 5,646 by 2041. The structure is 69 ft (21.1 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR 800
CrossesMad River
Location100 Feet South of U.S. 44
RouteState Highway 800
Coordinates41.92054, -73.06101
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating70.3 US tons

Structure

MaterialSteel
DeckOther
Main spans1
Design loadHS 20
Structure length69 ft (21.1 m)
Longest span62 ft (18.9 m)
Deck width52 ft (15.9 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2021)
Projected traffic5,646 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 SR 800 over Mad River built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR 800 over Mad River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does SR 800 over Mad River carry?

About 3,800 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is SR 800 over Mad River?

The structure is 69 ft (21.1 m) long with a longest span of 62 ft (18.9 m) and a deck 52 ft wide.

Who owns SR 800 over Mad River?

It is owned by the State Highway Agency.