US Bridges

Twenty Mile Road over Baldwin Gulch | Baldwin

Fair

Douglas County, Colorado · 0.2 MI S of Pine Drive · Structure no. PAR TWENTY-0.15

Built
2005
20 years old
Condition
Fair
inspected February 2025
Type
Frame
Concrete
Length
37 ft
1 main span
Daily traffic
11,352
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Twenty Mile Road over Baldwin Gulch | Baldwin is a concrete frame carrying Twenty Mile Road over Baldwin Gulch | Baldwin in Douglas County, Colorado. It was built in 2005, so it is 20 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 11,352 vehicles a day, roughly 2% of them trucks, projected to reach 15,212 by 2041. The structure is 37 ft (11.4 m) long and 115 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesTwenty Mile Road
CrossesBaldwin Gulch | Baldwin
Location0.2 MI S of Pine Drive
RouteCity Street 0
Coordinates39.54213, -104.77521
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating76.1 US tons
Inventory rating45.6 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length37 ft (11.4 m)
Longest span31 ft (9.4 m)
Deck width115 ft (35 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,352 (2021)
Projected traffic15,212 by 2041
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Twenty Mile Road over Baldwin Gulch | Baldwin built?

It was built in 2005, making it 20 years old in 2025.

What condition is Twenty Mile Road over Baldwin Gulch | Baldwin 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 February 2025.

How much traffic does Twenty Mile Road over Baldwin Gulch | Baldwin carry?

About 11,352 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Twenty Mile Road over Baldwin Gulch | Baldwin?

The structure is 37 ft (11.4 m) long with a longest span of 31 ft (9.4 m) and a deck 115 ft wide.

Who owns Twenty Mile Road over Baldwin Gulch | Baldwin?

It is owned by the Town or Township Highway Agency.