US Bridges

Fairgrounds RD over Brantner Gulch

Fair

Adams County, Colorado · 0.2 MI W of Main Entrance · Structure no. ADA127-09.5N193

Built
1993
32 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
281
2021 count
Owner
County
County Highway Agency

About this bridge

Fairgrounds RD over Brantner Gulch is a steel stringer/multi-beam or girder carrying Fairgrounds RD over Brantner Gulch in Adams County, Colorado. It was built in 1993, so it is 32 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 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 281 vehicles a day, projected to reach 366 by 2041. The structure is 35 ft (10.6 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFairgrounds RD
CrossesBrantner Gulch
Location0.2 MI W of Main Entrance
RouteCounty Highway 0
CountyAdams County
StateColorado
Coordinates39.92804, -104.87703
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.4 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length35 ft (10.6 m)
Longest span33 ft (10.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2021)
Projected traffic366 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Fairgrounds RD over Brantner Gulch built?

It was built in 1993, making it 32 years old in 2025.

What condition is Fairgrounds RD over Brantner Gulch 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 December 2023.

How much traffic does Fairgrounds RD over Brantner Gulch carry?

About 281 vehicles per day (2021 count).

How long is Fairgrounds RD over Brantner Gulch?

The structure is 35 ft (10.6 m) long with a longest span of 33 ft (10.1 m) and a deck 24 ft wide.

Who owns Fairgrounds RD over Brantner Gulch?

It is owned by the County Highway Agency.