US Bridges

US 385 Ml over Buffalo Creek

Fair

Prowers County, Colorado · 6 MI North of Granada · Structure no. L-27-P

Built
1935
90 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
3 main spans
Daily traffic
470
2020 count
Owner
State
State Highway Agency

About this bridge

US 385 Ml over Buffalo Creek is a steel stringer/multi-beam or girder carrying US 385 Ml over Buffalo Creek in Prowers County, Colorado. It was built in 1935, so it is 90 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 470 vehicles a day, roughly 38% of them trucks, projected to reach 541 by 2040. The structure is 107 ft (32.6 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 385 Ml
CrossesBuffalo Creek
Location6 MI North of Granada
RouteU.S. Route 385A
Coordinates38.14846, -102.3115
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be 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 rating21.6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans3
Design loadH 15
Structure length107 ft (32.6 m)
Longest span34 ft (10.4 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic470 (2020)
Projected traffic541 by 2040
Trucks38%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 US 385 Ml over Buffalo Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is US 385 Ml over Buffalo 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 January 2024.

How much traffic does US 385 Ml over Buffalo Creek carry?

About 470 vehicles per day (2020 count), of which roughly 38% are trucks.

How long is US 385 Ml over Buffalo Creek?

The structure is 107 ft (32.6 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns US 385 Ml over Buffalo Creek?

It is owned by the State Highway Agency.