US Bridges

Mckay Road over Grange Hall Creek

Good

Adams County, Colorado · .35 MI North of 104th Ave · Structure no. THN-MKY104-GHC

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete
Length
103 ft
7 main spans
Daily traffic
14,424
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mckay Road over Grange Hall Creek is a concrete culvert carrying Mckay Road over Grange Hall Creek in Adams 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,424 vehicles a day, roughly 2% of them trucks, projected to reach 18,751 by 2041. The structure is 103 ft (31.4 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMckay Road
CrossesGrange Hall Creek
Location.35 MI North of 104th Ave
RouteCity Street 0
Coordinates39.89066, -104.91776
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating94.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span14 ft (4.3 m)
Deck width49 ft (15 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,424 (2021)
Projected traffic18,751 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mckay Road over Grange Hall Creek built?

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

What condition is Mckay Road over Grange Hall Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Mckay Road over Grange Hall Creek carry?

About 14,424 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Mckay Road over Grange Hall Creek?

The structure is 103 ft (31.4 m) long with a longest span of 14 ft (4.3 m) and a deck 49 ft wide.

Who owns Mckay Road over Grange Hall Creek?

It is owned by the City or Municipal Highway Agency.