US Bridges

SH 59 Ml over E Spring Creek Trib.

Fair

Kit Carson County, Colorado · 16.1 MI S of JCT I 70 · Structure no. H-25-O

Built
1960
65 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
380
2020 count
Owner
State
State Highway Agency

About this bridge

SH 59 Ml over E Spring Creek Trib. is a concrete culvert carrying SH 59 Ml over E Spring Creek Trib. in Kit Carson County, Colorado. It was built in 1960, so it is 65 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 6 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 380 vehicles a day, roughly 30% of them trucks, projected to reach 490 by 2040. The structure is 21 ft (6.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 59 Ml
CrossesE Spring Creek Trib.
Location16.1 MI S of JCT I 70
RouteState Highway 59A
Coordinates39.07642, -102.86667
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating47.1 US tons
Inventory rating28.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2020)
Projected traffic490 by 2040
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 SH 59 Ml over E Spring Creek Trib. built?

It was built in 1960, making it 65 years old in 2025.

What condition is SH 59 Ml over E Spring Creek Trib. 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 October 2023.

How much traffic does SH 59 Ml over E Spring Creek Trib. carry?

About 380 vehicles per day (2020 count), of which roughly 30% are trucks.

How long is SH 59 Ml over E Spring Creek Trib.?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 40 ft wide.

Who owns SH 59 Ml over E Spring Creek Trib.?

It is owned by the State Highway Agency.