US Bridges

Nbnd US 285 over County Road 72

Good

Park County, Colorado · NB US 285 and CR 72 · Structure no. G-15-E

Built
2012
13 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
4,050
2020 count
Owner
State
State Highway Agency

About this bridge

Nbnd US 285 over County Road 72 is a prestressed concrete slab carrying Nbnd US 285 over County Road 72 in Park County, Colorado. It was built in 2012, so it is 13 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 4,050 vehicles a day, roughly 8% of them trucks, projected to reach 5,265 by 2040. The structure is 59 ft (17.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNbnd US 285
CrossesCounty Road 72
LocationNB US 285 and CR 72
RouteU.S. Route 285D
Coordinates39.43574, -105.46102
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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating53.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length59 ft (17.9 m)
Longest span56 ft (17.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,050 (2020)
Projected traffic5,265 by 2040
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nbnd US 285 over County Road 72 built?

It was built in 2012, making it 13 years old in 2025.

What condition is Nbnd US 285 over County Road 72 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 August 2023.

How much traffic does Nbnd US 285 over County Road 72 carry?

About 4,050 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Nbnd US 285 over County Road 72?

The structure is 59 ft (17.9 m) long with a longest span of 56 ft (17.1 m) and a deck 43 ft wide.

Who owns Nbnd US 285 over County Road 72?

It is owned by the State Highway Agency.