US Bridges

Sanborn Park RD over Horsefly Creek

Fair

Montrose County, Colorado · 20.0 MI E of Redvale · Structure no. 085014B16.40016

Built
1961
64 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
86
2022 count
Owner
County
County Highway Agency

About this bridge

Sanborn Park RD over Horsefly Creek is a prestressed concrete tee beam carrying Sanborn Park RD over Horsefly Creek in Montrose County, Colorado. It was built in 1961, so it is 64 years old, older 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 86 vehicles a day, projected to reach 100 by 2042. The structure is 29 ft (8.9 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSanborn Park RD
CrossesHorsefly Creek
Location20.0 MI E of Redvale
RouteCounty Highway 0
CountyMontrose County
StateColorado
Coordinates38.20377, -108.05745
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.6 US tons
Inventory rating36.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length29 ft (8.9 m)
Longest span25 ft (7.7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2022)
Projected traffic100 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Sanborn Park RD over Horsefly Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Sanborn Park RD over Horsefly 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 Sanborn Park RD over Horsefly Creek carry?

About 86 vehicles per day (2022 count).

How long is Sanborn Park RD over Horsefly Creek?

The structure is 29 ft (8.9 m) long with a longest span of 25 ft (7.7 m) and a deck 15 ft wide.

Who owns Sanborn Park RD over Horsefly Creek?

It is owned by the County Highway Agency.