US Bridges

SR 816 (glen Rd) over Housatonic River

Fair

Fairfield County, Connecticut · Glen RD O/ Lake Zoar · Structure no. 00507

Built
1936
89 years old, rebuilt 1986
Condition
Fair
inspected August 2024
Type
Truss - Thru
Steel
Length
308 ft
1 main span
Daily traffic
3,800
2022 count
Owner
State
State Highway Agency

About this bridge

SR 816 (glen Rd) over Housatonic River is a steel truss - thru carrying SR 816 (glen Rd) over Housatonic River in Fairfield County, Connecticut. It was built in 1936 and reconstructed in 1986, so it is 89 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 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 3,800 vehicles a day, roughly 5% of them trucks, projected to reach 5,646 by 2042. The structure is 308 ft (93.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 816 (glen Rd)
CrossesHousatonic River
LocationGlen RD O/ Lake Zoar
RouteState Highway 816
CountyFairfield County
StateConnecticut
Coordinates41.43701, -73.2654
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length308 ft (93.9 m)
Longest span300 ft (91.4 m)
Deck width31 ft (9.6 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic3,800 (2022)
Projected traffic5,646 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 816 (glen Rd) over Housatonic River built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1986.

What condition is SR 816 (glen Rd) over Housatonic 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 August 2024.

How much traffic does SR 816 (glen Rd) over Housatonic River carry?

About 3,800 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is SR 816 (glen Rd) over Housatonic River?

The structure is 308 ft (93.9 m) long with a longest span of 300 ft (91.4 m) and a deck 31 ft wide.

Who owns SR 816 (glen Rd) over Housatonic River?

It is owned by the State Highway Agency.