US Bridges

FM 1488 over Outfall 12

Good

Montgomery County, Texas · 2.1 MI W of FM 2978 · Structure no. 121700052310181

Built
2010
15 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
23 ft
4 main spans
Daily traffic
39,251
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1488 over Outfall 12 is a concrete culvert carrying FM 1488 over Outfall 12 in Montgomery County, Texas. It was built in 2010, so it is 15 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 39,251 vehicles a day, roughly 3% of them trucks, projected to reach 58,877 by 2042. The structure is 23 ft (7 m) long and 99 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM 1488
CrossesOutfall 12
Location2.1 MI W of FM 2978
RouteState Highway 1488
StateTexas
Coordinates30.22138, -95.60202
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length23 ft (7 m)
Longest span4 ft (1.2 m)
Deck width99 ft (30.2 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,251 (2023)
Projected traffic58,877 by 2042
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 FM 1488 over Outfall 12 built?

It was built in 2010, making it 15 years old in 2025.

What condition is FM 1488 over Outfall 12 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 December 2024.

How much traffic does FM 1488 over Outfall 12 carry?

About 39,251 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is FM 1488 over Outfall 12?

The structure is 23 ft (7 m) long with a longest span of 4 ft (1.2 m) and a deck 99 ft wide.

Who owns FM 1488 over Outfall 12?

It is owned by the State Highway Agency.