US Bridges

Maple Street over Green Belt Floodway

Good

Prowers County, Colorado · In Lamar · Structure no. LMR-3 MAPLE ST.

Built
1975
50 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
511
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Maple Street over Green Belt Floodway is a concrete culvert carrying Maple Street over Green Belt Floodway in Prowers County, Colorado. It was built in 1975, so it is 50 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 511 vehicles a day, roughly 2% of them trucks, projected to reach 608 by 2042. The structure is 33 ft (10.2 m) long and 40 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMaple Street
CrossesGreen Belt Floodway
LocationIn Lamar
RouteCity Street 0
Coordinates38.09176, -102.63234
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span12 ft (3.7 m)
Deck width40 ft (12.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic511 (2022)
Projected traffic608 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Maple Street over Green Belt Floodway built?

It was built in 1975, making it 50 years old in 2025.

What condition is Maple Street over Green Belt Floodway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does Maple Street over Green Belt Floodway carry?

About 511 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Maple Street over Green Belt Floodway?

The structure is 33 ft (10.2 m) long with a longest span of 12 ft (3.7 m) and a deck 40 ft wide.

Who owns Maple Street over Green Belt Floodway?

It is owned by the City or Municipal Highway Agency.