US Bridges

US 34 Ml over Surveyor Creek

Fair

Washington County, Colorado · 8.7 MI E of Akron · Structure no. D-24-B

Built
1935
90 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
246 ft
6 main spans
Daily traffic
2,900
2020 count
Owner
State
State Highway Agency

About this bridge

US 34 Ml over Surveyor Creek is a steel stringer/multi-beam or girder carrying US 34 Ml over Surveyor Creek in Washington County, Colorado. It was built in 1935, so it is 90 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 2,900 vehicles a day, roughly 28% of them trucks, projected to reach 3,306 by 2040. The structure is 246 ft (75 m) long and 29 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS 34 Ml
CrossesSurveyor Creek
Location8.7 MI E of Akron
RouteU.S. Route 34B
CountyWashington County
StateColorado
Coordinates40.15576, -103.04829
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length246 ft (75 m)
Longest span39 ft (12 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2020)
Projected traffic3,306 by 2040
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.4 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 34 Ml over Surveyor Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is US 34 Ml over Surveyor 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 August 2023.

How much traffic does US 34 Ml over Surveyor Creek carry?

About 2,900 vehicles per day (2020 count), of which roughly 28% are trucks.

How long is US 34 Ml over Surveyor Creek?

The structure is 246 ft (75 m) long with a longest span of 39 ft (12 m) and a deck 29 ft wide.

Who owns US 34 Ml over Surveyor Creek?

It is owned by the State Highway Agency.