US Bridges

Vt 0004A Alt over Castleton River

Good

Rutland County, Vermont · 2.0 MI E Jct. VT.30 · Structure no. 200142000711032

Built
1964
61 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
3,300
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0004A Alt over Castleton River is a steel stringer/multi-beam or girder carrying Vt 0004A Alt over Castleton River in Rutland County, Vermont. It was built in 1964, so it is 61 years old, older than the Vermont average of 60.8 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 3,300 vehicles a day, roughly 6% of them trucks, projected to reach 3,465 by 2028. The structure is 69 ft (21 m) long and 35 ft wide.

CarriesVt 0004A Alt
CrossesCastleton River
Location2.0 MI E Jct. VT.30
RouteState Highway 4A
StateVermont
Coordinates43.61361, -73.16882
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2018)
Projected traffic3,465 by 2028
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$903,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 0004A Alt over Castleton River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Vt 0004A Alt over Castleton 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 June 2023.

How much traffic does Vt 0004A Alt over Castleton River carry?

About 3,300 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Vt 0004A Alt over Castleton River?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 35 ft wide.

Who owns Vt 0004A Alt over Castleton River?

It is owned by the State Highway Agency.