US Bridges

FM 1485 over East Fork Crystal Creek

Good

Montgomery County, Texas · 3.80 MI SE of SH 105 · Structure no. 121700106203017

Built
1989
36 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
4 main spans
Daily traffic
6,286
2024 count
Owner
State
State Highway Agency

About this bridge

FM 1485 over East Fork Crystal Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 1485 over East Fork Crystal Creek in Montgomery County, Texas. It was built in 1989, so it is 36 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 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 6,286 vehicles a day, roughly 9% of them trucks, projected to reach 4,070 by 2033. The structure is 240 ft (73.2 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM 1485
CrossesEast Fork Crystal Creek
Location3.80 MI SE of SH 105
RouteState Highway 1485
StateTexas
Coordinates30.29476, -95.35233
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span60 ft (18.3 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,286 (2024)
Projected traffic4,070 by 2033
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 1485 over East Fork Crystal Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is FM 1485 over East Fork Crystal Creek 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 October 2024.

How much traffic does FM 1485 over East Fork Crystal Creek carry?

About 6,286 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is FM 1485 over East Fork Crystal Creek?

The structure is 240 ft (73.2 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns FM 1485 over East Fork Crystal Creek?

It is owned by the State Highway Agency.