US Bridges

US 00007 Ml over Winooski River

Fair

Chittenden County, Vermont · 0.2 MI S Jct. VT.15 · Structure no. 205000015004032

Built
1928
97 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
359 ft
3 main spans
Daily traffic
31,300
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

US 00007 Ml over Winooski River is a steel continuous stringer/multi-beam or girder carrying US 00007 Ml over Winooski River in Chittenden County, Vermont. It was built in 1928, so it is 97 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 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 31,300 vehicles a day, roughly 7% of them trucks, projected to reach 32,865 by 2028. The structure is 359 ft (109.4 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 00007 Ml
CrossesWinooski River
Location0.2 MI S Jct. VT.15
RouteU.S. Route 7
StateVermont
Coordinates44.48914, -73.18658
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating27 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length359 ft (109.4 m)
Longest span135 ft (41.1 m)
Deck width58 ft (17.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,300 (2018)
Projected traffic32,865 by 2028
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$7.3 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 00007 Ml over Winooski River built?

It was built in 1928, making it 97 years old in 2025.

What condition is US 00007 Ml over Winooski 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 US 00007 Ml over Winooski River carry?

About 31,300 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is US 00007 Ml over Winooski River?

The structure is 359 ft (109.4 m) long with a longest span of 135 ft (41.1 m) and a deck 58 ft wide.

Who owns US 00007 Ml over Winooski River?

It is owned by the City or Municipal Highway Agency.