US Bridges

Vt 0105A Alt over Lucas Brook

Fair

Franklin County, Vermont · 1.6 MI N Jct. VT.105 · Structure no. 200611000206111

Built
1930
95 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
86 ft
2 main spans
Daily traffic
220
2018 count
Owner
State
State Highway Agency

About this bridge

Vt 0105A Alt over Lucas Brook is a concrete tee beam carrying Vt 0105A Alt over Lucas Brook in Franklin County, Vermont. It was built in 1930, so it is 95 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 220 vehicles a day, roughly 3% of them trucks, projected to reach 231 by 2028. The structure is 86 ft (26.2 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesVt 0105A Alt
CrossesLucas Brook
Location1.6 MI N Jct. VT.105
RouteState Highway 105A
CountyFranklin County
StateVermont
Coordinates45.01017, -72.58776
Functional classRural Minor 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length86 ft (26.2 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.2 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2018)
Projected traffic231 by 2028
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vt 0105A Alt over Lucas Brook built?

It was built in 1930, making it 95 years old in 2025.

What condition is Vt 0105A Alt over Lucas 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 September 2023.

How much traffic does Vt 0105A Alt over Lucas Brook carry?

About 220 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Vt 0105A Alt over Lucas Brook?

The structure is 86 ft (26.2 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Vt 0105A Alt over Lucas Brook?

It is owned by the State Highway Agency.