US Bridges

US 285 Ml over Middle Fk So Platte Rvr

Good

Park County, Colorado · 0.1 MI S JCT HWY 9 · Structure no. H-13-J

Built
2024
1 years old
Condition
Good
inspected October 2024
Type
Other
Other
Length
113 ft
1 main span
Daily traffic
8,000
2020 count
Owner
State
State Highway Agency

About this bridge

US 285 Ml over Middle Fk So Platte Rvr is a other other carrying US 285 Ml over Middle Fk So Platte Rvr in Park County, Colorado. It was built in 2024, so it is 1 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,000 vehicles a day, roughly 8% of them trucks, projected to reach 12,160 by 2040. The structure is 113 ft (34.3 m) long and 100 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 285 Ml
CrossesMiddle Fk So Platte Rvr
Location0.1 MI S JCT HWY 9
RouteU.S. Route 285D
Coordinates39.2193, -105.9938
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialOther
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length113 ft (34.3 m)
Longest span107 ft (32.5 m)
Deck width100 ft (30.5 m)
Roadway width97 ft (29.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2020)
Projected traffic12,160 by 2040
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 285 Ml over Middle Fk So Platte Rvr built?

It was built in 2024, making it 1 years old in 2025.

What condition is US 285 Ml over Middle Fk So Platte Rvr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does US 285 Ml over Middle Fk So Platte Rvr carry?

About 8,000 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 285 Ml over Middle Fk So Platte Rvr?

The structure is 113 ft (34.3 m) long with a longest span of 107 ft (32.5 m) and a deck 100 ft wide.

Who owns US 285 Ml over Middle Fk So Platte Rvr?

It is owned by the State Highway Agency.