US Bridges

Frontage Road over Local Drainage

Fair

Adams County, Colorado · 0.2 MI East of Tower Road · Structure no. BRI107-FRONTRD

Built
2005
20 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
32 ft
5 main spans
Daily traffic
2,019
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Frontage Road over Local Drainage is a concrete culvert carrying Frontage Road over Local Drainage 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 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 2,019 vehicles a day, roughly 5% of them trucks, projected to reach 2,624 by 2041. The structure is 32 ft (9.9 m) long and 114 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFrontage Road
CrossesLocal Drainage
Location0.2 MI East of Tower Road
RouteCity Street 0
Coordinates39.96299, -104.76373
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length32 ft (9.9 m)
Longest span5 ft (1.5 m)
Deck width114 ft (34.7 m)
Roadway width69 ft (20.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,019 (2021)
Projected traffic2,624 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Frontage Road over Local Drainage built?

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

What condition is Frontage Road over Local Drainage 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 Frontage Road over Local Drainage carry?

About 2,019 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Frontage Road over Local Drainage?

The structure is 32 ft (9.9 m) long with a longest span of 5 ft (1.5 m) and a deck 114 ft wide.

Who owns Frontage Road over Local Drainage?

It is owned by the City or Municipal Highway Agency.