US Bridges

Hd Road over Bismark Creek

Fair

Marquette County, Michigan · 1.0 MI W of 550 HWY · Structure no. 000000000006589

Built
1928
97 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
40
2001 count
Owner
County
County Highway Agency

About this bridge

Hd Road over Bismark Creek is a steel stringer/multi-beam or girder carrying Hd Road over Bismark Creek in Marquette County, Michigan. It was built in 1928, so it is 97 years old, older than the Michigan average of 48.3 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 40 vehicles a day, projected to reach 40 by 2020. The structure is 31 ft (9.4 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesHd Road
CrossesBismark Creek
Location1.0 MI W of 550 HWY
RouteCounty Highway 0
CountyMarquette County
StateMichigan
Coordinates46.63117, -87.48915
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
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 protection7 GoodSome minor problems.
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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length31 ft (9.4 m)
Longest span22 ft (6.7 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2001)
Projected traffic40 by 2020
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$66,000 (2050 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hd Road over Bismark Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Hd Road over Bismark 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 Hd Road over Bismark Creek carry?

About 40 vehicles per day (2001 count).

How long is Hd Road over Bismark Creek?

The structure is 31 ft (9.4 m) long with a longest span of 22 ft (6.7 m) and a deck 16 ft wide.

Who owns Hd Road over Bismark Creek?

It is owned by the County Highway Agency.