US Bridges

SH 83 Ml over Baldwin Gulch

Fair

Douglas County, Colorado · 10 MI N of JCT SH 86 · Structure no. F-17-IB

Built
1982
43 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
50,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 83 Ml over Baldwin Gulch is a concrete culvert carrying SH 83 Ml over Baldwin Gulch in Douglas County, Colorado. It was built in 1982, so it is 43 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 50,000 vehicles a day, roughly 4% of them trucks, projected to reach 63,000 by 2040. The structure is 30 ft (9.1 m) long and 242 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 83 Ml
CrossesBaldwin Gulch
Location10 MI N of JCT SH 86
RouteState Highway 83A
Coordinates39.54019, -104.76944
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 48 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 rating73.4 US tons
Inventory rating43.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width242 ft (73.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,000 (2020)
Projected traffic63,000 by 2040
Trucks4%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 83 Ml over Baldwin Gulch built?

It was built in 1982, making it 43 years old in 2025.

What condition is SH 83 Ml over Baldwin Gulch 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 June 2023.

How much traffic does SH 83 Ml over Baldwin Gulch carry?

About 50,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 83 Ml over Baldwin Gulch?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m) and a deck 242 ft wide.

Who owns SH 83 Ml over Baldwin Gulch?

It is owned by the State Highway Agency.