US Bridges

SH 59 Ml over E Spring Creek Trib.

Fair

Kit Carson County, Colorado · 12.9 MI S of JCT I 70 · Structure no. H-25-M

Built
1969
56 years old, rebuilt 1994
Condition
Fair
inspected February 2025
Type
Girder and Floorbeam System
Steel
Length
41 ft
1 main span
Daily traffic
380
2020 count
Owner
State
State Highway Agency

About this bridge

SH 59 Ml over E Spring Creek Trib. is a steel girder and floorbeam system carrying SH 59 Ml over E Spring Creek Trib. in Kit Carson County, Colorado. It was built in 1969 and reconstructed in 1994, so it is 56 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 41 ft (12.4 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 59 Ml
CrossesE Spring Creek Trib.
Location12.9 MI S of JCT I 70
RouteState Highway 59A
Coordinates39.12228, -102.86594
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.9 US tons
Inventory rating15.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span39 ft (12 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 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 1969, making it 56 years old in 2025. It was reconstructed in 1994.

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 February 2025.

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 41 ft (12.4 m) long with a longest span of 39 ft (12 m) and a deck 36 ft wide.

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

It is owned by the State Highway Agency.