US Bridges

County Road 3850 over Smith Fork

FairPosted for load

Delta County, Colorado · 1.2 MI W of Crawford · Structure no. DEL3850D1.6-53B

Built
1985
40 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
498
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 3850 over Smith Fork is a prestressed concrete tee beam carrying County Road 3850 over Smith Fork in Delta County, Colorado. It was built in 1985, so it is 40 years old, younger than the Colorado average of 42.2 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 498 vehicles a day, roughly 2% of them trucks, projected to reach 562 by 2042. The structure is 33 ft (10 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Road 3850
CrossesSmith Fork
Location1.2 MI W of Crawford
RouteCounty Highway 0
CountyDelta County
StateColorado
Coordinates38.69991, -107.63725
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating28.9 US tons
Inventory rating17.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10 m)
Longest span29 ft (8.8 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic498 (2022)
Projected traffic562 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road 3850 over Smith Fork built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Road 3850 over Smith Fork 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 County Road 3850 over Smith Fork carry?

About 498 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 3850 over Smith Fork?

The structure is 33 ft (10 m) long with a longest span of 29 ft (8.8 m) and a deck 28 ft wide.

Who owns County Road 3850 over Smith Fork?

It is owned by the County Highway Agency.