US Bridges

Henderson Road over Brantner Ditch

Fair

Adams County, Colorado · 0.1 M E of Riverdale RD · Structure no. BRI102-124

Built
1940
85 years old, rebuilt 1970
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
10,583
2021 count
Owner
County
County Highway Agency

About this bridge

Henderson Road over Brantner Ditch is a concrete slab carrying Henderson Road over Brantner Ditch in Adams County, Colorado. It was built in 1940 and reconstructed in 1970, so it is 85 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 10,583 vehicles a day, roughly 2% of them trucks, projected to reach 13,757 by 2041. The structure is 23 ft (7 m) long and 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesHenderson Road
CrossesBrantner Ditch
Location0.1 M E of Riverdale RD
RouteCounty Highway 0
CountyAdams County
StateColorado
Coordinates39.92506, -104.88278
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,583 (2021)
Projected traffic13,757 by 2041
Trucks2%
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

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 Henderson Road over Brantner Ditch built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1970.

What condition is Henderson Road over Brantner Ditch 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 Henderson Road over Brantner Ditch carry?

About 10,583 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Henderson Road over Brantner Ditch?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns Henderson Road over Brantner Ditch?

It is owned by the County Highway Agency.