US Bridges

County Road P448 over Creighton River

Fair

Schoolcraft County, Michigan · 7.7 MI S of M-28 · Structure no. 000000000009707

Built
1978
47 years old, rebuilt 2024
Condition
Fair
inspected November 2024
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
101
2022 count
Owner
County
County Highway Agency

About this bridge

County Road P448 over Creighton River is a wood or timber slab carrying County Road P448 over Creighton River in Schoolcraft County, Michigan. It was built in 1978 and reconstructed in 2024, so it is 47 years old, younger 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 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 101 vehicles a day, roughly 15% of them trucks, projected to reach 123 by 2042. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

Open in Google Maps
CarriesCounty Road P448
CrossesCreighton River
Location7.7 MI S of M-28
RouteCounty Highway 0
CountySchoolcraft County
StateMichigan
Coordinates46.24098, -86.24216
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating61.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101 (2022)
Projected traffic123 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road P448 over Creighton River built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2024.

What condition is County Road P448 over Creighton River 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 November 2024.

How much traffic does County Road P448 over Creighton River carry?

About 101 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is County Road P448 over Creighton River?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 30 ft wide.

Who owns County Road P448 over Creighton River?

It is owned by the County Highway Agency.