US Bridges

SH 144 Ml over Jackson Lake Outlet

Fair

Morgan County, Colorado · 6.5 MI E of JCT US 34 · Structure no. C-20-AK

Built
1925
100 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
410
2020 count
Owner
State
State Highway Agency

About this bridge

SH 144 Ml over Jackson Lake Outlet is a steel stringer/multi-beam or girder carrying SH 144 Ml over Jackson Lake Outlet in Morgan County, Colorado. It was built in 1925, so it is 100 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 5 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 410 vehicles a day, roughly 8% of them trucks, projected to reach 566 by 2040. The structure is 32 ft (9.9 m) long and 21 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 144 Ml
CrossesJackson Lake Outlet
Location6.5 MI E of JCT US 34
RouteState Highway 144A
Coordinates40.34733, -104.07909
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating56.4 US tons
Inventory rating33.8 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 10
Structure length32 ft (9.9 m)
Longest span30 ft (9.1 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2020)
Projected traffic566 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 144 Ml over Jackson Lake Outlet built?

It was built in 1925, making it 100 years old in 2025.

What condition is SH 144 Ml over Jackson Lake Outlet 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 144 Ml over Jackson Lake Outlet carry?

About 410 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is SH 144 Ml over Jackson Lake Outlet?

The structure is 32 ft (9.9 m) long with a longest span of 30 ft (9.1 m) and a deck 21 ft wide.

Who owns SH 144 Ml over Jackson Lake Outlet?

It is owned by the State Highway Agency.