US Bridges

US 50 Ml over Spring Creek

Fair

Fremont County, Colorado · 7.7 MI SE of Salida · Structure no. K-13-G

Built
1934
91 years old
Condition
Fair
inspected February 2025
Type
Arch - Deck
Concrete
Length
69 ft
1 main span
Daily traffic
5,600
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Spring Creek is a concrete arch - deck carrying US 50 Ml over Spring Creek in Fremont County, Colorado. It was built in 1934, so it is 91 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 5 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 5,600 vehicles a day, roughly 7% of them trucks, projected to reach 5,992 by 2040. The structure is 69 ft (21 m) long and 33 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesUS 50 Ml
CrossesSpring Creek
Location7.7 MI SE of Salida
RouteU.S. Route 50A
Coordinates38.47219, -105.87767
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
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 typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length69 ft (21 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2020)
Projected traffic5,992 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$125,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 Ml over Spring Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is US 50 Ml over Spring 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 February 2025.

How much traffic does US 50 Ml over Spring Creek carry?

About 5,600 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is US 50 Ml over Spring Creek?

The structure is 69 ft (21 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns US 50 Ml over Spring Creek?

It is owned by the State Highway Agency.