US Bridges

Harmony RD/OLDSH68 over I 25 Ml

Good

Larimer County, Colorado · Harmony RD/I25 · Structure no. B-17-DS

Built
1999
26 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
323 ft
3 main spans
Daily traffic
54,909
2021 count
Owner
State
State Highway Agency

About this bridge

Harmony RD/OLDSH68 over I 25 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying Harmony RD/OLDSH68 over I 25 Ml in Larimer County, Colorado. It was built in 1999, so it is 26 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 54,909 vehicles a day, roughly 3% of them trucks, projected to reach 68,636 by 2041. The structure is 323 ft (98.4 m) long and 110 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesHarmony RD/OLDSH68
CrossesI 25 Ml
LocationHarmony RD/I25
RouteCounty Highway 0
Coordinates40.52317, -104.99294
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.4 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length323 ft (98.4 m)
Longest span190 ft (57.9 m)
Deck width110 ft (33.6 m)
Roadway width97 ft (29.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54,909 (2021)
Projected traffic68,636 by 2041
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 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 Harmony RD/OLDSH68 over I 25 Ml built?

It was built in 1999, making it 26 years old in 2025.

What condition is Harmony RD/OLDSH68 over I 25 Ml in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Harmony RD/OLDSH68 over I 25 Ml carry?

About 54,909 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Harmony RD/OLDSH68 over I 25 Ml?

The structure is 323 ft (98.4 m) long with a longest span of 190 ft (57.9 m) and a deck 110 ft wide.

Who owns Harmony RD/OLDSH68 over I 25 Ml?

It is owned by the State Highway Agency.