US Bridges

C2003 over Mill Brook

FairPosted for load

Chittenden County, Vermont · 0.4 MI to JCT W CL3 TH28 · Structure no. 100409001204091

Built
1949
76 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
1 main span
Daily traffic
750
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

C2003 over Mill Brook is a steel stringer/multi-beam or girder carrying C2003 over Mill Brook in Chittenden County, Vermont. It was built in 1949, so it is 76 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. Its operating status is: posted for load restriction.

It carries about 750 vehicles a day, roughly 2% of them trucks, projected to reach 788 by 2029. The structure is 49 ft (14.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesC2003
CrossesMill Brook
Location0.4 MI to JCT W CL3 TH28
CountyChittenden County
StateVermont
Coordinates44.45051, -72.90935
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length49 ft (14.9 m)
Longest span46 ft (14 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2019)
Projected traffic788 by 2029
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$489,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C2003 over Mill Brook built?

It was built in 1949, making it 76 years old in 2025.

What condition is C2003 over Mill 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 C2003 over Mill Brook carry?

About 750 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is C2003 over Mill Brook?

The structure is 49 ft (14.9 m) long with a longest span of 46 ft (14 m) and a deck 26 ft wide.

Who owns C2003 over Mill Brook?

It is owned by the Town or Township Highway Agency.