US Bridges

SH 105 Ml over Crystal Creek

Fair

El Paso County, Colorado · .7 W OFI25/MONUMENT Inter · Structure no. H-17-U

Built
1927
98 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
36 ft
1 main span
Daily traffic
8,500
2020 count
Owner
State
State Highway Agency

About this bridge

SH 105 Ml over Crystal Creek is a concrete stringer/multi-beam or girder carrying SH 105 Ml over Crystal Creek in El Paso County, Colorado. It was built in 1927, so it is 98 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 8,500 vehicles a day, roughly 2% of them trucks, projected to reach 10,455 by 2040. The structure is 36 ft (11 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 105 Ml
CrossesCrystal Creek
Location.7 W OFI25/MONUMENT Inter
RouteState Highway 105A
Coordinates39.09782, -104.87137
Functional classUrban 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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating46.8 US tons
Inventory rating28 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length36 ft (11 m)
Longest span33 ft (10 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2020)
Projected traffic10,455 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$63,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 105 Ml over Crystal Creek built?

It was built in 1927, making it 98 years old in 2025.

What condition is SH 105 Ml over Crystal 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 January 2024.

How much traffic does SH 105 Ml over Crystal Creek carry?

About 8,500 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is SH 105 Ml over Crystal Creek?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10 m) and a deck 32 ft wide.

Who owns SH 105 Ml over Crystal Creek?

It is owned by the State Highway Agency.