US Bridges

SH 88 Ml(arap. Rd) over Windmill Creek

Fair

Arapahoe County, Colorado · Just West of Jordan Road · Structure no. F-17-HC

Built
1981
44 years old, rebuilt 1984
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
54,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 88 Ml(arap. Rd) over Windmill Creek is a concrete culvert carrying SH 88 Ml(arap. Rd) over Windmill Creek in Arapahoe County, Colorado. It was built in 1981 and reconstructed in 1984, 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 5 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 54,000 vehicles a day, roughly 4% of them trucks, projected to reach 64,800 by 2040. The structure is 32 ft (9.8 m) long and 130 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 88 Ml(arap. Rd)
CrossesWindmill Creek
LocationJust West of Jordan Road
RouteState Highway 88B
Coordinates39.59483, -104.82275
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating87.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span12 ft (3.7 m)
Deck width130 ft (39.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54,000 (2020)
Projected traffic64,800 by 2040
Trucks4%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 88 Ml(arap. Rd) over Windmill Creek built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1984.

What condition is SH 88 Ml(arap. Rd) over Windmill 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 2024.

How much traffic does SH 88 Ml(arap. Rd) over Windmill Creek carry?

About 54,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 88 Ml(arap. Rd) over Windmill Creek?

The structure is 32 ft (9.8 m) long with a longest span of 12 ft (3.7 m) and a deck 130 ft wide.

Who owns SH 88 Ml(arap. Rd) over Windmill Creek?

It is owned by the State Highway Agency.