US Bridges

US 50 Ml over Patterson Hollow

Good

Otero County, Colorado · 3 Me W of Rock Ford · Structure no. L-21-AB

Built
2001
24 years old
Condition
Good
inspected February 2022
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
5,600
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Patterson Hollow is a concrete culvert carrying US 50 Ml over Patterson Hollow in Otero County, Colorado. It was built in 2001, so it is 24 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 5,600 vehicles a day, roughly 11% of them trucks, projected to reach 5,880 by 2040. The structure is 25 ft (7.6 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 50 Ml
CrossesPatterson Hollow
Location3 Me W of Rock Ford
RouteU.S. Route 50B
Coordinates38.08285, -103.79409
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating78.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width100 ft (30.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2020)
Projected traffic5,880 by 2040
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 50 Ml over Patterson Hollow built?

It was built in 2001, making it 24 years old in 2025.

What condition is US 50 Ml over Patterson Hollow 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 February 2022.

How much traffic does US 50 Ml over Patterson Hollow carry?

About 5,600 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is US 50 Ml over Patterson Hollow?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 100 ft wide.

Who owns US 50 Ml over Patterson Hollow?

It is owned by the State Highway Agency.