US Bridges

Carl Worth RD FH40 over Little Brevort River

Fair

Mackinac County, Michigan · 4.0 MI E of US-2 · Structure no. 000000000005977

Built
2013
12 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
480
2015 count
Owner
County
County Highway Agency

About this bridge

Carl Worth RD FH40 over Little Brevort River is a prestressed concrete box beam or girders - multiple carrying Carl Worth RD FH40 over Little Brevort River in Mackinac County, Michigan. It was built in 2013, so it is 12 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 480 vehicles a day, roughly 10% of them trucks, projected to reach 650 by 2035. The structure is 37 ft (11.3 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCarl Worth RD FH40
CrossesLittle Brevort River
Location4.0 MI E of US-2
RouteCounty Highway 4938
Coordinates46.02729, -84.99135
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.7 US tons
Inventory rating57.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length37 ft (11.3 m)
Longest span36 ft (10.9 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic480 (2015)
Projected traffic650 by 2035
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Carl Worth RD FH40 over Little Brevort River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Carl Worth RD FH40 over Little Brevort 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 October 2023.

How much traffic does Carl Worth RD FH40 over Little Brevort River carry?

About 480 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is Carl Worth RD FH40 over Little Brevort River?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (10.9 m) and a deck 34 ft wide.

Who owns Carl Worth RD FH40 over Little Brevort River?

It is owned by the County Highway Agency.