US Bridges

County Road 1800 over Surface Creek

Fair

Delta County, Colorado · .2 MI E of 2375 RD · Structure no. DELS25R-239-27B

Built
1985
40 years old, rebuilt 2021
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
368
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 1800 over Surface Creek is a steel stringer/multi-beam or girder carrying County Road 1800 over Surface Creek in Delta County, Colorado. It was built in 1985 and reconstructed in 2021, 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.

It carries about 368 vehicles a day, roughly 2% of them trucks, projected to reach 416 by 2042. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 1800
CrossesSurface Creek
Location.2 MI E of 2375 RD
RouteCounty Highway 0
CountyDelta County
StateColorado
Coordinates38.91891, -107.9168
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 statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.7 US tons
Inventory rating24.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span49 ft (14.8 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic368 (2022)
Projected traffic416 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 1800 over Surface Creek built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2021.

What condition is County Road 1800 over Surface Creek 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 1800 over Surface Creek carry?

About 368 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 1800 over Surface Creek?

The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.8 m) and a deck 28 ft wide.

Who owns County Road 1800 over Surface Creek?

It is owned by the County Highway Agency.