US Bridges

Lapeer RD(OLDM-21) over Br Pine R

Fair

St. Clair County, Michigan · 7.8 MI E of M-19 · Structure no. 000000000009920

Built
1947
78 years old, rebuilt 1998
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
3 main spans
Daily traffic
3,850
1998 count
Owner
County
County Highway Agency

About this bridge

Lapeer RD(OLDM-21) over Br Pine R is a steel stringer/multi-beam or girder carrying Lapeer RD(OLDM-21) over Br Pine R in St. Clair County, Michigan. It was built in 1947 and reconstructed in 1998, so it is 78 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.

It carries about 3,850 vehicles a day, roughly 5% of them trucks, projected to reach 4,300 by 2020. The structure is 135 ft (41.1 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLapeer RD(OLDM-21)
CrossesBr Pine R
Location7.8 MI E of M-19
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.99146, -82.61304
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.9 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,850 (1998)
Projected traffic4,300 by 2020
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lapeer RD(OLDM-21) over Br Pine R built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1998.

What condition is Lapeer RD(OLDM-21) over Br Pine R 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 March 2024.

How much traffic does Lapeer RD(OLDM-21) over Br Pine R carry?

About 3,850 vehicles per day (1998 count), of which roughly 5% are trucks.

How long is Lapeer RD(OLDM-21) over Br Pine R?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 46 ft wide.

Who owns Lapeer RD(OLDM-21) over Br Pine R?

It is owned by the County Highway Agency.