US Bridges

Rapson Road over Philp Drain

Fair

Huron County, Michigan · Sec. 36 Lincoln Twp. · Structure no. 000000000003620

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
95
2009 count
Owner
County
County Highway Agency

About this bridge

Rapson Road over Philp Drain is a prestressed concrete tee beam carrying Rapson Road over Philp Drain in Huron County, Michigan. It was built in 1974, so it is 51 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 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 95 vehicles a day, projected to reach 170 by 2029. The structure is 29 ft (8.8 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesRapson Road
CrossesPhilp Drain
LocationSec. 36 Lincoln Twp.
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.85565, -82.88735
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.2 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2009)
Projected traffic170 by 2029
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rapson Road over Philp Drain built?

It was built in 1974, making it 51 years old in 2025.

What condition is Rapson Road over Philp Drain 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 Rapson Road over Philp Drain carry?

About 95 vehicles per day (2009 count).

How long is Rapson Road over Philp Drain?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 34 ft wide.

Who owns Rapson Road over Philp Drain?

It is owned by the County Highway Agency.