US Bridges

Santiago Road over Cedar Creek

Fair

Arenac County, Michigan · 0.6 MI N of Twining RD · Structure no. 000000000000474

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
99
1998 count
Owner
County
County Highway Agency

About this bridge

Santiago Road over Cedar Creek is a concrete culvert carrying Santiago Road over Cedar Creek in Arenac County, Michigan. It was built in 1985, so it is 40 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 99 vehicles a day, projected to reach 70 by 1977. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSantiago Road
CrossesCedar Creek
Location0.6 MI N of Twining RD
RouteCounty Highway 0
CountyArenac County
StateMichigan
Coordinates44.11945, -83.7064
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (1998)
Projected traffic70 by 1977
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Santiago Road over Cedar Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Santiago Road over Cedar 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 August 2024.

How much traffic does Santiago Road over Cedar Creek carry?

About 99 vehicles per day (1998 count).

How long is Santiago Road over Cedar Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Santiago Road over Cedar Creek?

It is owned by the County Highway Agency.