US Bridges

Broadway Street over Big Horn River

Poor

Hot Springs County, Wyoming · Thermopolis · Structure no. EFZ

Built
1968
57 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
280 ft
3 main spans
Daily traffic
1,707
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Broadway Street over Big Horn River is a steel continuous stringer/multi-beam or girder carrying Broadway Street over Big Horn River in Hot Springs County, Wyoming. It was built in 1968, so it is 57 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,707 vehicles a day, roughly 5% of them trucks, projected to reach 2,390 by 2043. The structure is 280 ft (85.3 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBroadway Street
CrossesBig Horn River
LocationThermopolis
RouteCity Street 445-1
StateWyoming
Coordinates43.64603, -108.20341
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.6 US tons
Inventory rating36.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span109 ft (33.2 m)
Deck width42 ft (12.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,707 (2024)
Projected traffic2,390 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$32,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadway Street over Big Horn River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Broadway Street over Big Horn River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Broadway Street over Big Horn River carry?

About 1,707 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Broadway Street over Big Horn River?

The structure is 280 ft (85.3 m) long with a longest span of 109 ft (33.2 m) and a deck 42 ft wide.

Who owns Broadway Street over Big Horn River?

It is owned by the Town or Township Highway Agency.