US Bridges

Bowles Ave over SH 470 Ml

Fair

Jefferson County, Colorado · 1.1 MI S of Belleview · Structure no. F-16-NN

Built
1990
35 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
223 ft
2 main spans
Daily traffic
11,120
2024 count
Owner
State
State Highway Agency

About this bridge

Bowles Ave over SH 470 Ml is a prestressed concrete continuous box beam or girders - multiple carrying Bowles Ave over SH 470 Ml in Jefferson County, Colorado. It was built in 1990, so it is 35 years old, younger 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 11,120 vehicles a day, roughly 4% of them trucks, projected to reach 12,788 by 2044. The structure is 223 ft (67.9 m) long and 107 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBowles Ave
CrossesSH 470 Ml
Location1.1 MI S of Belleview
RouteCity Street 0
Coordinates39.60951, -105.15275
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.5 US tons
Inventory rating42.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length223 ft (67.9 m)
Longest span112 ft (34 m)
Deck width107 ft (32.6 m)
Roadway width94 ft (28.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,120 (2024)
Projected traffic12,788 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 Bowles Ave over SH 470 Ml built?

It was built in 1990, making it 35 years old in 2025.

What condition is Bowles Ave over SH 470 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 January 2024.

How much traffic does Bowles Ave over SH 470 Ml carry?

About 11,120 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Bowles Ave over SH 470 Ml?

The structure is 223 ft (67.9 m) long with a longest span of 112 ft (34 m) and a deck 107 ft wide.

Who owns Bowles Ave over SH 470 Ml?

It is owned by the State Highway Agency.