US Bridges

County Road 346 over I 25 Ml

Fair

Pueblo County, Colorado · 5.3 Miles South of SH 165 · Structure no. M-17-AR

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
204 ft
4 main spans
Daily traffic
117
2022 count
Owner
State
State Highway Agency

About this bridge

County Road 346 over I 25 Ml is a concrete continuous tee beam carrying County Road 346 over I 25 Ml in Pueblo County, Colorado. It was built in 1965, so it is 60 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 117 vehicles a day, projected to reach 138 by 2042. The structure is 204 ft (62.2 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty Road 346
CrossesI 25 Ml
Location5.3 Miles South of SH 165
RouteCounty Highway 25A
Coordinates37.89416, -104.82932
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.1 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic117 (2022)
Projected traffic138 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 County Road 346 over I 25 Ml built?

It was built in 1965, making it 60 years old in 2025.

What condition is County Road 346 over I 25 Ml 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 April 2024.

How much traffic does County Road 346 over I 25 Ml carry?

About 117 vehicles per day (2022 count).

How long is County Road 346 over I 25 Ml?

The structure is 204 ft (62.2 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns County Road 346 over I 25 Ml?

It is owned by the State Highway Agency.