US Bridges

Webb Road over South Br. Pine River

FairPosted for load

St. Clair County, Michigan · Sec. 4 Wales Twp. · Structure no. 000000000010236

Built
1935
90 years old, rebuilt 1981
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
137
2009 count
Owner
County
County Highway Agency

About this bridge

Webb Road over South Br. Pine River is a prestressed concrete tee beam carrying Webb Road over South Br. Pine River in St. Clair County, Michigan. It was built in 1935 and reconstructed in 1981, so it is 90 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 5 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 137 vehicles a day, roughly 4% of them trucks, projected to reach 246 by 2029. The structure is 35 ft (10.7 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWebb Road
CrossesSouth Br. Pine River
LocationSec. 4 Wales Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.98098, -82.70426
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.7 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span30 ft (9.1 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic137 (2009)
Projected traffic246 by 2029
Trucks4%
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 Webb Road over South Br. Pine River built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1981.

What condition is Webb Road over South Br. Pine 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 December 2023.

How much traffic does Webb Road over South Br. Pine River carry?

About 137 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is Webb Road over South Br. Pine River?

The structure is 35 ft (10.7 m) long with a longest span of 30 ft (9.1 m) and a deck 21 ft wide.

Who owns Webb Road over South Br. Pine River?

It is owned by the County Highway Agency.