US Bridges

County Road P448 over Creighton River

FairPosted for load

Schoolcraft County, Michigan · 3.2 MI S of M-28 · Structure no. 000000000009706

Built
1978
47 years old
Condition
Fair
inspected June 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
100
2020 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, 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 15% of them trucks, projected to reach 148 by 2040. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 53.4 mi (86 km).

Location

Open in Google Maps
CarriesCounty Road P448
CrossesCreighton River
Location3.2 MI S of M-28
RouteCounty Highway 7535
CountySchoolcraft County
StateMichigan
Coordinates46.29151, -86.26649
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating26.1 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 traffic100 (2020)
Projected traffic148 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed53.4 mi (86 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.

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 June 2023.

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

About 100 vehicles per day (2020 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.