US Bridges

Monroe HWY over Styles Brook

Fair

Waldo County, Maine · 0.8 MI SE of JCT RTE 7 · Structure no. 1144

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
788
2016 count
Owner
State
State Highway Agency

About this bridge

Monroe HWY over Styles Brook is a steel culvert carrying Monroe HWY over Styles Brook in Waldo County, Maine. It was built in 1991, so it is 34 years old, younger than the Maine average of 53.7 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 788 vehicles a day, roughly 5% of them trucks, projected to reach 1,261 by 2036. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesMonroe HWY
CrossesStyles Brook
Location0.8 MI SE of JCT RTE 7
RouteCounty Highway 139
CountyWaldo County
StateMaine
Coordinates44.56016, -69.11091
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating71.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length23 ft (6.9 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic788 (2016)
Projected traffic1,261 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Monroe HWY over Styles Brook built?

It was built in 1991, making it 34 years old in 2025.

What condition is Monroe HWY over Styles Brook 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 Monroe HWY over Styles Brook carry?

About 788 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Monroe HWY over Styles Brook?

The structure is 23 ft (6.9 m) long with a longest span of 9 ft (2.6 m).

Who owns Monroe HWY over Styles Brook?

It is owned by the State Highway Agency.