US Bridges

SR636 Briggs ST over I-95&SR623+641&I-95 310

Fair

New London County, Connecticut · 0.39 MI S of Route 32 Int · Structure no. 02603

Built
1973
52 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
366 ft
4 main spans
Daily traffic
3,400
2020 count
Owner
State
State Highway Agency

About this bridge

SR636 Briggs ST over I-95&SR623+641&I-95 310 is a steel stringer/multi-beam or girder carrying SR636 Briggs ST over I-95&SR623+641&I-95 310 in New London County, Connecticut. It was built in 1973, so it is 52 years old, younger 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 3,400 vehicles a day, roughly 3% of them trucks, projected to reach 5,052 by 2040. The structure is 366 ft (111.5 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR636 Briggs ST
CrossesI-95&SR623+641&I-95 310
Location0.39 MI S of Route 32 Int
RouteState Highway 636
CountyNew London County
StateConnecticut
Coordinates41.36611, -72.10861
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length366 ft (111.5 m)
Longest span116 ft (35.4 m)
Deck width69 ft (21.1 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2020)
Projected traffic5,052 by 2040
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR636 Briggs ST over I-95&SR623+641&I-95 310 built?

It was built in 1973, making it 52 years old in 2025.

What condition is SR636 Briggs ST over I-95&SR623+641&I-95 310 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 SR636 Briggs ST over I-95&SR623+641&I-95 310 carry?

About 3,400 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is SR636 Briggs ST over I-95&SR623+641&I-95 310?

The structure is 366 ft (111.5 m) long with a longest span of 116 ft (35.4 m) and a deck 69 ft wide.

Who owns SR636 Briggs ST over I-95&SR623+641&I-95 310?

It is owned by the State Highway Agency.