US Bridges

City Indus over Allen Brook

Fair

Chittenden County, Vermont · Industrial Ave · Structure no. 205504001704172

Built
1932
93 years old, rebuilt 1964
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
59 ft
1 main span
Daily traffic
11,900
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

City Indus over Allen Brook is a steel stringer/multi-beam or girder carrying City Indus over Allen Brook in Chittenden County, Vermont. It was built in 1932 and reconstructed in 1964, so it is 93 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 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 11,900 vehicles a day, roughly 3% of them trucks, projected to reach 12,495 by 2026. The structure is 59 ft (18 m) long and 33 ft wide.

CarriesCity Indus
CrossesAllen Brook
LocationIndustrial Ave
RouteCity Street INDUS
StateVermont
Coordinates44.46401, -73.11759
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length59 ft (18 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,900 (2016)
Projected traffic12,495 by 2026
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was City Indus over Allen Brook built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1964.

What condition is City Indus over Allen Brook 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 July 2024.

How much traffic does City Indus over Allen Brook carry?

About 11,900 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is City Indus over Allen Brook?

The structure is 59 ft (18 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns City Indus over Allen Brook?

It is owned by the City or Municipal Highway Agency.