US Bridges

SH 75 Ml over Unnamed Drainage

Good

Arapahoe County, Colorado · 1.4 SW of JCT US 85 · Structure no. F-16-WJ

Built
2000
25 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
15,000
2018 count
Owner
State
State Highway Agency

About this bridge

SH 75 Ml over Unnamed Drainage is a concrete culvert carrying SH 75 Ml over Unnamed Drainage in Arapahoe County, Colorado. It was built in 2000, so it is 25 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 15,000 vehicles a day, roughly 1% of them trucks, projected to reach 15,600 by 2038. The structure is 25 ft (7.7 m) long and 55 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSH 75 Ml
CrossesUnnamed Drainage
Location1.4 SW of JCT US 85
RouteState Highway 75B
Coordinates39.6032, -105.04052
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.5 US tons
Inventory rating29.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length25 ft (7.7 m)
Longest span12 ft (3.7 m)
Deck width55 ft (16.8 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2018)
Projected traffic15,600 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 75 Ml over Unnamed Drainage built?

It was built in 2000, making it 25 years old in 2025.

What condition is SH 75 Ml over Unnamed Drainage 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 July 2023.

How much traffic does SH 75 Ml over Unnamed Drainage carry?

About 15,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 75 Ml over Unnamed Drainage?

The structure is 25 ft (7.7 m) long with a longest span of 12 ft (3.7 m) and a deck 55 ft wide.

Who owns SH 75 Ml over Unnamed Drainage?

It is owned by the State Highway Agency.