US Bridges

Bristol Road over I-69

Fair

Lapeer County, Michigan · 3.0 MI SE of Imlay City · Structure no. 000000000005359

Built
1978
47 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
280 ft
2 main spans
Daily traffic
95
1994 count
Owner
State
State Highway Agency

About this bridge

Bristol Road over I-69 is a steel continuous stringer/multi-beam or girder carrying Bristol Road over I-69 in Lapeer County, Michigan. It was built in 1978, so it is 47 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 95 vehicles a day, roughly 2% of them trucks, projected to reach 500 by 1977. The structure is 280 ft (85.3 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBristol Road
CrossesI-69
Location3.0 MI SE of Imlay City
RouteCounty Highway 0
Coordinates42.99993, -83.02679
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating49.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length280 ft (85.3 m)
Longest span141 ft (42.9 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (1994)
Projected traffic500 by 1977
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$129,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bristol Road over I-69 built?

It was built in 1978, making it 47 years old in 2025.

What condition is Bristol Road over I-69 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 January 2024.

How much traffic does Bristol Road over I-69 carry?

About 95 vehicles per day (1994 count), of which roughly 2% are trucks.

How long is Bristol Road over I-69?

The structure is 280 ft (85.3 m) long with a longest span of 141 ft (42.9 m) and a deck 40 ft wide.

Who owns Bristol Road over I-69?

It is owned by the State Highway Agency.