US Bridges

Mississippi Avenue over Side Creek

Fair

Arapahoe County, Colorado · 0.1 MI E of Tower RD · Structure no. AUR11.0-N.2

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
13,675
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mississippi Avenue over Side Creek is a steel culvert carrying Mississippi Avenue over Side Creek in Arapahoe County, Colorado. It was built in 1981, so it is 44 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 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 13,675 vehicles a day, roughly 4% of them trucks, projected to reach 16,683 by 2041. The structure is 21 ft (6.5 m) long and 135 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMississippi Avenue
CrossesSide Creek
Location0.1 MI E of Tower RD
RouteCity Street 0
Coordinates39.69634, -104.77082
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.5 m)
Longest span9 ft (2.7 m)
Deck width135 ft (41.2 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,675 (2021)
Projected traffic16,683 by 2041
Trucks4%
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

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 Mississippi Avenue over Side Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Mississippi Avenue over Side Creek 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 October 2023.

How much traffic does Mississippi Avenue over Side Creek carry?

About 13,675 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Mississippi Avenue over Side Creek?

The structure is 21 ft (6.5 m) long with a longest span of 9 ft (2.7 m) and a deck 135 ft wide.

Who owns Mississippi Avenue over Side Creek?

It is owned by the City or Municipal Highway Agency.