US Bridges

US 50 Ml over N.Fk.South Arkansas Rvr

Good

Chaffee County, Colorado · 0.1 MI E of Maysville · Structure no. J-12-AM

Built
2003
22 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
2,800
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over N.Fk.South Arkansas Rvr is a concrete culvert carrying US 50 Ml over N.Fk.South Arkansas Rvr in Chaffee County, Colorado. It was built in 2003, so it is 22 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 2,800 vehicles a day, roughly 10% of them trucks, projected to reach 3,220 by 2040. The structure is 30 ft (9.2 m) long and 142 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 50 Ml
CrossesN.Fk.South Arkansas Rvr
Location0.1 MI E of Maysville
RouteU.S. Route 50A
Coordinates38.53775, -106.18582
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 inspectionJune 2023
Inspection intervalevery 24 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 rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span14 ft (4.4 m)
Deck width142 ft (43.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2020)
Projected traffic3,220 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 Ml over N.Fk.South Arkansas Rvr built?

It was built in 2003, making it 22 years old in 2025.

What condition is US 50 Ml over N.Fk.South Arkansas 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 June 2023.

How much traffic does US 50 Ml over N.Fk.South Arkansas Rvr carry?

About 2,800 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 50 Ml over N.Fk.South Arkansas Rvr?

The structure is 30 ft (9.2 m) long with a longest span of 14 ft (4.4 m) and a deck 142 ft wide.

Who owns US 50 Ml over N.Fk.South Arkansas Rvr?

It is owned by the State Highway Agency.