US Bridges

CO Cnty RD 1A over BNSF Railway

FairPosted for load

Converse County, Wyoming · Approx 5 MI SE of Douglas · Structure no. FRI

Built
1946
79 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
135 ft
1 main span
Daily traffic
105
2024 count
Owner
Railroad
Railroad

About this bridge

CO Cnty RD 1A over BNSF Railway is a wood or timber stringer/multi-beam or girder carrying CO Cnty RD 1A over BNSF Railway in Converse County, Wyoming. It was built in 1946, so it is 79 years old, older than the Wyoming average of 48.4 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. Its operating status is: posted for load restriction.

It carries about 105 vehicles a day, roughly 11% of them trucks, projected to reach 147 by 2043. The structure is 135 ft (41.1 m) long and 19 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCO Cnty RD 1A
CrossesBNSF Railway
LocationApprox 5 MI SE of Douglas
RouteCounty Highway 1A
CountyConverse County
StateWyoming
Coordinates42.6872, -105.34559
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.1 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1 (+8 approach)
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span25 ft (7.6 m)
Deck width19 ft (5.8 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2024)
Projected traffic147 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$64,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO Cnty RD 1A over BNSF Railway built?

It was built in 1946, making it 79 years old in 2025.

What condition is CO Cnty RD 1A over BNSF Railway 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 September 2024.

How much traffic does CO Cnty RD 1A over BNSF Railway carry?

About 105 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is CO Cnty RD 1A over BNSF Railway?

The structure is 135 ft (41.1 m) long with a longest span of 25 ft (7.6 m) and a deck 19 ft wide.

Who owns CO Cnty RD 1A over BNSF Railway?

It is owned by the Railroad.